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622986980 = 225721157791
BaseRepresentation
bin100101001000100…
…000011011100100
31121102021000110212
4211020200123210
52233441040410
6141452434552
721303205400
oct4510403344
91542230425
10622986980
1129a729380
12154778a58
139c0b6765
145ca4c100
1539a5db05
hex252206e4

622986980 has 72 divisors (see below), whose sum is σ = 1660248576. Its totient is φ = 194174400.

The previous prime is 622986929. The next prime is 622986983. The reversal of 622986980 is 89689226.

It is a super-3 number, since 3×6229869803 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (622986983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18116 + ... + 39675.

It is an arithmetic number, because the mean of its divisors is an integer number (23059008).

Almost surely, 2622986980 is an apocalyptic number.

It is an amenable number.

622986980 is an abundant number, since it is smaller than the sum of its proper divisors (1037261596).

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

622986980 is a wasteful number, since it uses less digits than its factorization.

622986980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57825 (or 57816 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 622986980 is about 24959.7071296920. The cubic root of 622986980 is about 854.0690618699.

The spelling of 622986980 in words is "six hundred twenty-two million, nine hundred eighty-six thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 11 14 20 22 28 35 44 49 55 70 77 98 110 140 154 196 220 245 308 385 490 539 770 980 1078 1540 2156 2695 5390 10780 57791 115582 231164 288955 404537 577910 635701 809074 1155820 1271402 1618148 2022685 2542804 2831759 3178505 4045370 4449907 5663518 6357010 8090740 8899814 11327036 12714020 14158795 17799628 22249535 28317590 31149349 44499070 56635180 62298698 88998140 124597396 155746745 311493490 622986980