97718428 has 12 divisors (see below), whose sum is σ = 173560072. Its totient is φ = 48129840.

The previous prime is 97718419. The next prime is 97718441. The reversal of 97718428 is 82481779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182043 + ... + 182578.

Almost surely, 2^97718428 is an apocalyptic number.

It is an amenable number.

97718428 is a deficient number, since it is larger than the sum of its proper divisors (75841644).

97718428 is a wasteful number, since it uses less digits than its factorization.

97718428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364692 (or 364690 counting only the distinct ones).

The product of its digits is 225792, while the sum is 46.

The square root of 97718428 is about 9885.2631730268. The cubic root of 97718428 is about 460.6016512979.

The spelling of 97718428 in words is "ninety-seven million, seven hundred eighteen thousand, four hundred twenty-eight".