97218404 has 12 divisors (see below), whose sum is σ = 171784704. Its totient is φ = 48137064.

The previous prime is 97218403. The next prime is 97218409. The reversal of 97218404 is 40481279.

It is not an unprimeable number, because it can be changed into a prime (97218403) 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, 117572 + ... + 118395.

It is an arithmetic number, because the mean of its divisors is an integer number (14315392).

Almost surely, 2^97218404 is an apocalyptic number.

It is an amenable number.

97218404 is a deficient number, since it is larger than the sum of its proper divisors (74566300).

97218404 is a wasteful number, since it uses less digits than its factorization.

97218404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236074 (or 236072 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 97218404 is about 9859.9393507263. The cubic root of 97218404 is about 459.8146764501.

The spelling of 97218404 in words is "ninety-seven million, two hundred eighteen thousand, four hundred four".