90418816 has 32 divisors (see below), whose sum is σ = 185950080. Its totient is φ = 43749120.

The previous prime is 90418813. The next prime is 90418837. The reversal of 90418816 is 61881409.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (90418813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7426 + ... + 15361.

It is an arithmetic number, because the mean of its divisors is an integer number (5810940).

Almost surely, 2^90418816 is an apocalyptic number.

It is an amenable number.

90418816 is an abundant number, since it is smaller than the sum of its proper divisors (95531264).

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

90418816 is a wasteful number, since it uses less digits than its factorization.

90418816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22832 (or 22820 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 90418816 is about 9508.8809015572. The cubic root of 90418816 is about 448.8345413768.

The spelling of 90418816 in words is "ninety million, four hundred eighteen thousand, eight hundred sixteen".