97910428 has 36 divisors (see below), whose sum is σ = 217442232. Its totient is φ = 38146080.

The previous prime is 97910411. The next prime is 97910437. The reversal of 97910428 is 82401979.

It is a super-2 number, since 2×97910428² = 19172903822286368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20551 + ... + 24862.

It is an arithmetic number, because the mean of its divisors is an integer number (6040062).

Almost surely, 2^97910428 is an apocalyptic number.

97910428 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

97910428 is an abundant number, since it is smaller than the sum of its proper divisors (119531804).

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

97910428 is a wasteful number, since it uses less digits than its factorization.

97910428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45442 (or 45433 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 97910428 is about 9894.9698332031. The cubic root of 97910428 is about 460.9031217635.

The spelling of 97910428 in words is "ninety-seven million, nine hundred ten thousand, four hundred twenty-eight".