97572440 has 128 divisors (see below), whose sum is σ = 266112000. Its totient is φ = 31477248.

The previous prime is 97572439. The next prime is 97572451. The reversal of 97572440 is 4427579.

It is a junction number, because it is equal to n+sod(n) for n = 97572394 and 97572403.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 701891 + ... + 702029.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^97572440 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 97572440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133056000).

97572440 is an abundant number, since it is smaller than the sum of its proper divisors (168539560).

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

97572440 is a wasteful number, since it uses less digits than its factorization.

97572440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 97572440 is about 9877.8762899725. The cubic root of 97572440 is about 460.3721625891.

The spelling of 97572440 in words is "ninety-seven million, five hundred seventy-two thousand, four hundred forty".