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90372849688 = 23111026964201
BaseRepresentation
bin101010000101010100…
…1000100000000011000
322122021020110102202001
41110022221010000120
52440040422142223
6105303335450344
76346344355612
oct1241251040030
9278236412661
1090372849688
1135366132630
12156218269b4
1386a31489b4
144534635db2
15253de7a9ad
hex150aa44018

90372849688 has 16 divisors (see below), whose sum is σ = 184853556360. Its totient is φ = 41078568000.

The previous prime is 90372849673. The next prime is 90372849689. The reversal of 90372849688 is 88694827309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90372849689) 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 3 ways as a sum of consecutive naturals, for example, 513482013 + ... + 513482188.

Almost surely, 290372849688 is an apocalyptic number.

It is an amenable number.

90372849688 is an abundant number, since it is smaller than the sum of its proper divisors (94480706672).

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

90372849688 is a wasteful number, since it uses less digits than its factorization.

90372849688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026964218 (or 1026964214 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

It can be divided in two parts, 90 and 372849688, that added together give a triangular number (372849778 = T27307).

The spelling of 90372849688 in words is "ninety billion, three hundred seventy-two million, eight hundred forty-nine thousand, six hundred eighty-eight".

Divisors: 1 2 4 8 11 22 44 88 1026964201 2053928402 4107856804 8215713608 11296606211 22593212422 45186424844 90372849688