90897216 has 56 divisors (see below), whose sum is σ = 253166880. Its totient is φ = 28703232.

The previous prime is 90897211. The next prime is 90897217. The reversal of 90897216 is 61279809.

90897216 = 3174² + 3175² + ... + 3182².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90897211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8811 + ... + 16106.

Almost surely, 2^90897216 is an apocalyptic number.

90897216 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

90897216 is an abundant number, since it is smaller than the sum of its proper divisors (162269664).

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

90897216 is a wasteful number, since it uses less digits than its factorization.

90897216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24951 (or 24941 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 90897216 is about 9534.0031466326. The cubic root of 90897216 is about 449.6247340572.

The spelling of 90897216 in words is "ninety million, eight hundred ninety-seven thousand, two hundred sixteen".