97816388 has 12 divisors (see below), whose sum is σ = 171590160. Its totient is φ = 48790632.

The previous prime is 97816387. The next prime is 97816393. The reversal of 97816388 is 88361879.

It is a happy number.

It is a super-2 number, since 2×97816388² = 19136091522733088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97816387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27506 + ... + 30857.

It is an arithmetic number, because the mean of its divisors is an integer number (14299180).

Almost surely, 2^97816388 is an apocalyptic number.

It is an amenable number.

97816388 is a deficient number, since it is larger than the sum of its proper divisors (73773772).

97816388 is a wasteful number, since it uses less digits than its factorization.

97816388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58786 (or 58784 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 97816388 is about 9890.2167822551. The cubic root of 97816388 is about 460.7555133337.

The spelling of 97816388 in words is "ninety-seven million, eight hundred sixteen thousand, three hundred eighty-eight".