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18410428988 = 22710735917117
BaseRepresentation
bin10001001001010110…
…001101101000111100
31202112001110200202022
4101021112031220330
5300201032211423
612242503215312
71221141031040
oct211126155074
952461420668
1018410428988
117898230876
123699747538
131975283a83
14c69148020
1572b42bdc8
hex44958da3c

18410428988 has 48 divisors (see below), whose sum is σ = 37270679040. Its totient is φ = 7794215616.

The previous prime is 18410428969. The next prime is 18410428997. The reversal of 18410428988 is 88982401481.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 1067006 + ... + 1084122.

It is an arithmetic number, because the mean of its divisors is an integer number (776472480).

Almost surely, 218410428988 is an apocalyptic number.

It is an amenable number.

18410428988 is an abundant number, since it is smaller than the sum of its proper divisors (18860250052).

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

18410428988 is a wasteful number, since it uses less digits than its factorization.

18410428988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17594 (or 17592 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 53.

The spelling of 18410428988 in words is "eighteen billion, four hundred ten million, four hundred twenty-eight thousand, nine hundred eighty-eight".

Divisors: 1 2 4 7 14 28 107 214 359 428 718 749 1436 1498 2513 2996 5026 10052 17117 34234 38413 68468 76826 119819 153652 239638 268891 479276 537782 1075564 1831519 3663038 6145003 7326076 12290006 12820633 24580012 25641266 43015021 51282532 86030042 172060084 657515321 1315030642 2630061284 4602607247 9205214494 18410428988