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4812990 = 2357134143
BaseRepresentation
bin10010010111000010111110
3100001112011220
4102113002332
52213003430
6251054210
755624020
oct22270276
910045156
104812990
112798086
121741366
13cc6930
148d4010
15651110
hex4970be

4812990 has 128 divisors (see below), whose sum is σ = 14902272. Its totient is φ = 967680.

The previous prime is 4812943. The next prime is 4812991. The reversal of 4812990 is 992184.

4812990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4812991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111909 + ... + 111951.

It is an arithmetic number, because the mean of its divisors is an integer number (116424).

Almost surely, 24812990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4812990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7451136).

4812990 is an abundant number, since it is smaller than the sum of its proper divisors (10089282).

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

4812990 is a wasteful number, since it uses less digits than its factorization.

4812990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 4812990 is about 2193.8527753703. The cubic root of 4812990 is about 168.8385653070.

The spelling of 4812990 in words is "four million, eight hundred twelve thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 41 42 43 65 70 78 82 86 91 105 123 129 130 182 195 205 210 215 246 258 273 287 301 390 410 430 455 533 546 559 574 602 615 645 861 903 910 1066 1118 1230 1290 1365 1435 1505 1599 1677 1722 1763 1806 2665 2730 2795 2870 3010 3198 3354 3526 3731 3913 4305 4515 5289 5330 5590 7462 7826 7995 8385 8610 8815 9030 10578 11193 11739 12341 15990 16770 17630 18655 19565 22386 22919 23478 24682 26445 37023 37310 39130 45838 52890 55965 58695 61705 68757 74046 111930 114595 117390 123410 137514 160433 185115 229190 320866 343785 370230 481299 687570 802165 962598 1604330 2406495 4812990