972784516 has 24 divisors (see below), whose sum is σ = 1871321760. Its totient is φ = 438796800.

The previous prime is 972784511. The next prime is 972784541. The reversal of 972784516 is 615487279.

It is a self number, because there is not a number n which added to its sum of digits gives 972784516.

It is not an unprimeable number, because it can be changed into a prime (972784511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78621 + ... + 90148.

It is an arithmetic number, because the mean of its divisors is an integer number (77971740).

Almost surely, 2^972784516 is an apocalyptic number.

It is an amenable number.

972784516 is a deficient number, since it is larger than the sum of its proper divisors (898537244).

972784516 is a wasteful number, since it uses less digits than its factorization.

972784516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168915 (or 168913 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 972784516 is about 31189.4936797634. The cubic root of 972784516 is about 990.8446065767.

The spelling of 972784516 in words is "nine hundred seventy-two million, seven hundred eighty-four thousand, five hundred sixteen".