90011712 has 56 divisors (see below), whose sum is σ = 272182336. Its totient is φ = 25717248.

The previous prime is 90011707. The next prime is 90011743. The reversal of 90011712 is 21711009.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32143 + ... + 34830.

Almost surely, 2^90011712 is an apocalyptic number.

It is an amenable number.

90011712 is an abundant number, since it is smaller than the sum of its proper divisors (182170624).

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

90011712 is a wasteful number, since it uses less digits than its factorization.

90011712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66995 (or 66985 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 90011712 is about 9487.4502370236. The cubic root of 90011712 is about 448.1599131505.

The spelling of 90011712 in words is "ninety million, eleven thousand, seven hundred twelve".