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90946139982 = 2373207639589
BaseRepresentation
bin101010010110011001…
…1111111011101001110
322200202012012121011220
41110230303333131032
52442224202434412
6105440255224210
76366505302105
oct1245463773516
9280665177156
1090946139982
113562a7a8065
1215761818066
138764b52119
14458a82903c
15257446e68c
hex152ccff74e

90946139982 has 16 divisors (see below), whose sum is σ = 184383955920. Its totient is φ = 29900100672.

The previous prime is 90946139959. The next prime is 90946139983. The reversal of 90946139982 is 28993164909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90946139983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103819357 + ... + 103820232.

It is an arithmetic number, because the mean of its divisors is an integer number (11523997245).

Almost surely, 290946139982 is an apocalyptic number.

90946139982 is an abundant number, since it is smaller than the sum of its proper divisors (93437815938).

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

90946139982 is a wasteful number, since it uses less digits than its factorization.

90946139982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207639667.

The product of its (nonzero) digits is 7558272, while the sum is 60.

The spelling of 90946139982 in words is "ninety billion, nine hundred forty-six million, one hundred thirty-nine thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 73 146 219 438 207639589 415279178 622918767 1245837534 15157689997 30315379994 45473069991 90946139982