90102112 has 12 divisors (see below), whose sum is σ = 177388596. Its totient is φ = 45051040.

The previous prime is 90102083. The next prime is 90102113. The reversal of 90102112 is 21120109.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90102113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407814 + ... + 1407877.

It is an arithmetic number, because the mean of its divisors is an integer number (14782383).

Almost surely, 2^90102112 is an apocalyptic number.

It is an amenable number.

90102112 is a deficient number, since it is larger than the sum of its proper divisors (87286484).

90102112 is a wasteful number, since it uses less digits than its factorization.

90102112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815701 (or 2815693 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 90102112 is about 9492.2132298005. The cubic root of 90102112 is about 448.3098940067.

The spelling of 90102112 in words is "ninety million, one hundred two thousand, one hundred twelve".