972326440 has 32 divisors (see below), whose sum is σ = 2188973160. Its totient is φ = 388710400.

The previous prime is 972326437. The next prime is 972326447. The reversal of 972326440 is 44623279.

It can be written as a sum of positive squares in 4 ways, for example, as 731269764 + 241056676 = 27042^2 + 15526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 972326440.

It is not an unprimeable number, because it can be changed into a prime (972326447) 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, 77400 + ... + 89080.

Almost surely, 2^972326440 is an apocalyptic number.

It is an amenable number.

972326440 is an abundant number, since it is smaller than the sum of its proper divisors (1216646720).

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

972326440 is a wasteful number, since it uses less digits than its factorization.

972326440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13773 (or 13769 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 972326440 is about 31182.1493806954. The cubic root of 972326440 is about 990.6890553769.

It can be divided in two parts, 9723 and 26440, that added together give a palindrome (36163).

The spelling of 972326440 in words is "nine hundred seventy-two million, three hundred twenty-six thousand, four hundred forty".