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994945490 = 257211297173
BaseRepresentation
bin111011010011011…
…010100111010010
32120100011110121222
4323103122213102
54014201223430
6242421045042
733440616500
oct7323324722
92510143558
10994945490
11470691300
12239256782
1312b18a656
14961d3670
155c5339e5
hex3b4da9d2

994945490 has 144 divisors (see below), whose sum is σ = 2326881816. Its totient is φ = 305141760.

The previous prime is 994945489. The next prime is 994945499. The reversal of 994945490 is 94549499.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 934463761 + 60481729 = 30569^2 + 7777^2 .

Together with 1331936326 it forms an amicable pair .

It is not an unprimeable number, because it can be changed into a prime (994945499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5751044 + ... + 5751216.

Almost surely, 2994945490 is an apocalyptic number.

994945490 is an abundant number, since it is smaller than the sum of its proper divisors (1331936326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

994945490 is a wasteful number, since it uses less digits than its factorization.

994945490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 994945490 is about 31542.7565377536. The cubic root of 994945490 is about 998.3123166606.

The spelling of 994945490 in words is "nine hundred ninety-four million, nine hundred forty-five thousand, four hundred ninety".

Divisors: 1 2 5 7 10 11 14 22 35 49 55 70 77 97 98 110 121 154 173 194 242 245 346 385 485 490 539 605 679 770 847 865 970 1067 1078 1210 1211 1358 1694 1730 1903 2134 2422 2695 3395 3806 4235 4753 5335 5390 5929 6055 6790 7469 8470 8477 9506 9515 10670 11737 11858 12110 13321 14938 16781 16954 19030 20933 23474 23765 26642 29645 33562 37345 41866 42385 47530 52283 58685 59290 66605 74690 82159 83905 84770 93247 104566 104665 117370 117467 133210 146531 164318 167810 184591 186494 209330 234934 261415 293062 369182 410795 466235 522830 575113 587335 732655 821590 822269 922955 932470 1025717 1150226 1174670 1292137 1465310 1644538 1845910 2030501 2051434 2584274 2875565 4061002 4111345 5128585 5751130 6460685 8222690 9044959 10152505 10257170 12921370 14213507 18089918 20305010 28427014 45224795 71067535 90449590 99494549 142135070 198989098 497472745 994945490