90945738 has 24 divisors (see below), whose sum is σ = 212207268. Its totient is φ = 27983232.

The previous prime is 90945719. The next prime is 90945773. The reversal of 90945738 is 83754909.

It can be written as a sum of positive squares in 2 ways, for example, as 84879369 + 6066369 = 9213^2 + 2463^2 .

It is a super-2 number, since 2×90945738² = 16542254520729288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90945693 and 90945702.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194095 + ... + 194562.

Almost surely, 2^90945738 is an apocalyptic number.

90945738 is an abundant number, since it is smaller than the sum of its proper divisors (121261530).

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

90945738 is a wasteful number, since it uses less digits than its factorization.

90945738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388678 (or 388675 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 90945738 is about 9536.5474884782. The cubic root of 90945738 is about 449.7047248110.

The spelling of 90945738 in words is "ninety million, nine hundred forty-five thousand, seven hundred thirty-eight".