975202728 has 16 divisors (see below), whose sum is σ = 2438006880. Its totient is φ = 325067568.

The previous prime is 975202717. The next prime is 975202729. The reversal of 975202728 is 827202579.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 975202728.

It is not an unprimeable number, because it can be changed into a prime (975202729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20316700 + ... + 20316747.

It is an arithmetic number, because the mean of its divisors is an integer number (152375430).

Almost surely, 2^975202728 is an apocalyptic number.

It is an amenable number.

975202728 is an abundant number, since it is smaller than the sum of its proper divisors (1462804152).

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

975202728 is a wasteful number, since it uses less digits than its factorization.

975202728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40633456 (or 40633452 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 975202728 is about 31228.2360693011. The cubic root of 975202728 is about 991.6649628418.

The spelling of 975202728 in words is "nine hundred seventy-five million, two hundred two thousand, seven hundred twenty-eight".