90177012 has 18 divisors (see below), whose sum is σ = 227947538. Its totient is φ = 30058992.

The previous prime is 90177011. The next prime is 90177023. The reversal of 90177012 is 21077109.

It can be written as a sum of positive squares in only one way, i.e., 71978256 + 18198756 = 8484^2 + 4266^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90177011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1252423 + ... + 1252494.

Almost surely, 2^90177012 is an apocalyptic number.

It is an amenable number.

90177012 is an abundant number, since it is smaller than the sum of its proper divisors (137770526).

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

90177012 is a wasteful number, since it uses less digits than its factorization.

90177012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504927 (or 2504922 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 90177012 is about 9496.1577493216. The cubic root of 90177012 is about 448.4340831452.

The spelling of 90177012 in words is "ninety million, one hundred seventy-seven thousand, twelve".