90109756 has 48 divisors (see below), whose sum is σ = 177166080. Its totient is φ = 39755520.

The previous prime is 90109739. The next prime is 90109819. The reversal of 90109756 is 65790109.

It is a Smith number, since the sum of its digits (37) 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, 267220 + ... + 267556.

It is an arithmetic number, because the mean of its divisors is an integer number (3690960).

Almost surely, 2^90109756 is an apocalyptic number.

It is an amenable number.

90109756 is a deficient number, since it is larger than the sum of its proper divisors (87056324).

90109756 is a wasteful number, since it uses less digits than its factorization.

90109756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 90109756 is about 9492.6158670832. The cubic root of 90109756 is about 448.3225714155.

It can be divided in two parts, 901097 and 56, that added together give a triangular number (901153 = T₁₃₄₂).

The spelling of 90109756 in words is "ninety million, one hundred nine thousand, seven hundred fifty-six".