97978512 has 40 divisors (see below), whose sum is σ = 256171104. Its totient is φ = 32264704.

The previous prime is 97978511. The next prime is 97978513. The reversal of 97978512 is 21587979.

It is an interprime number because it is at equal distance from previous prime (97978511) and next prime (97978513).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (97978511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8313 + ... + 16280.

Almost surely, 2^97978512 is an apocalyptic number.

It is an amenable number.

97978512 is an abundant number, since it is smaller than the sum of its proper divisors (158192592).

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

97978512 is a wasteful number, since it uses less digits than its factorization.

97978512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24687 (or 24681 counting only the distinct ones).

The product of its digits is 317520, while the sum is 48.

The square root of 97978512 is about 9898.4095692187. The cubic root of 97978512 is about 461.0099297852.

The spelling of 97978512 in words is "ninety-seven million, nine hundred seventy-eight thousand, five hundred twelve".