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989437942472 = 237531013300679
BaseRepresentation
bin11100110010111110001…
…10001101101011001000
310111120220122001022101012
432121133012031223020
5112202332103124342
62034312544543052
7131325123513260
oct16313706155310
93446818038335
10989437942472
11351688a18831
1213b914921a88
13723c4008965
1435c637b67a0
151ab0e382b82
hexe65f18dac8

989437942472 has 64 divisors (see below), whose sum is σ = 2181617452800. Its totient is φ = 411924614400.

The previous prime is 989437942459. The next prime is 989437942541. The reversal of 989437942472 is 274249734989.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1350572 + ... + 1950107.

It is an arithmetic number, because the mean of its divisors is an integer number (34087772700).

Almost surely, 2989437942472 is an apocalyptic number.

It is an amenable number.

989437942472 is an abundant number, since it is smaller than the sum of its proper divisors (1192179510328).

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

989437942472 is a wasteful number, since it uses less digits than its factorization.

989437942472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300846 (or 3300842 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 68.

The spelling of 989437942472 in words is "nine hundred eighty-nine billion, four hundred thirty-seven million, nine hundred forty-two thousand, four hundred seventy-two".

Divisors: 1 2 4 7 8 14 28 53 56 101 106 202 212 371 404 424 707 742 808 1414 1484 2828 2968 5353 5656 10706 21412 37471 42824 74942 149884 299768 3300679 6601358 13202716 23104753 26405432 46209506 92419012 174935987 184838024 333368579 349871974 666737158 699743948 1224551909 1333474316 1399487896 2333580053 2449103818 2666948632 4667160106 4898207636 9334320212 9796415272 17668534687 18668640424 35337069374 70674138748 123679742809 141348277496 247359485618 494718971236 989437942472