972936840 has 64 divisors (see below), whose sum is σ = 2941839360. Its totient is φ = 257402880.

The previous prime is 972936821. The next prime is 972936841. The reversal of 972936840 is 48639279.

It is a self number, because there is not a number n which added to its sum of digits gives 972936840.

It is not an unprimeable number, because it can be changed into a prime (972936841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16681 + ... + 47160.

It is an arithmetic number, because the mean of its divisors is an integer number (45966240).

Almost surely, 2^972936840 is an apocalyptic number.

It is an amenable number.

972936840 is an abundant number, since it is smaller than the sum of its proper divisors (1968902520).

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

972936840 is a wasteful number, since it uses less digits than its factorization.

972936840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63982 (or 63978 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 972936840 is about 31191.9354962144. The cubic root of 972936840 is about 990.8963211940.

The spelling of 972936840 in words is "nine hundred seventy-two million, nine hundred thirty-six thousand, eight hundred forty".