97520772 has 48 divisors (see below), whose sum is σ = 244363392. Its totient is φ = 30159360.

The previous prime is 97520743. The next prime is 97520791. The reversal of 97520772 is 27702579.

It is a self number, because there is not a number n which added to its sum of digits gives 97520772.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11118 + ... + 17850.

It is an arithmetic number, because the mean of its divisors is an integer number (5090904).

Almost surely, 2^97520772 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 97520772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122181696).

97520772 is an abundant number, since it is smaller than the sum of its proper divisors (146842620).

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

97520772 is a wasteful number, since it uses less digits than its factorization.

97520772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828 (or 6826 counting only the distinct ones).

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 97520772 is about 9875.2606041562. The cubic root of 97520772 is about 460.2908872183.

The spelling of 97520772 in words is "ninety-seven million, five hundred twenty thousand, seven hundred seventy-two".