972514978 has 4 divisors (see below), whose sum is σ = 1458772470. Its totient is φ = 486257488.

The previous prime is 972514973. The next prime is 972514987. The reversal of 972514978 is 879415279.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 561358249 + 411156729 = 23693^2 + 20277^2 .

It is not an unprimeable number, because it can be changed into a prime (972514973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243128743 + ... + 243128746.

Almost surely, 2^972514978 is an apocalyptic number.

972514978 is a deficient number, since it is larger than the sum of its proper divisors (486257492).

972514978 is a wasteful number, since it uses less digits than its factorization.

972514978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486257491.

The product of its digits is 1270080, while the sum is 52.

The square root of 972514978 is about 31185.1724061292. The cubic root of 972514978 is about 990.7530841003.

The spelling of 972514978 in words is "nine hundred seventy-two million, five hundred fourteen thousand, nine hundred seventy-eight".