97731504 has 240 divisors, whose sum is σ = 324166752. Its totient is φ = 27205632.

The previous prime is 97731481. The next prime is 97731511. The reversal of 97731504 is 40513779.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1177447 + ... + 1177529.

Almost surely, 2^97731504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97731504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162083376).

97731504 is an abundant number, since it is smaller than the sum of its proper divisors (226435248).

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

97731504 is a wasteful number, since it uses less digits than its factorization.

97731504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 97731504 is about 9885.9245394652. The cubic root of 97731504 is about 460.6221952174.

The spelling of 97731504 in words is "ninety-seven million, seven hundred thirty-one thousand, five hundred four".