972758772 has 18 divisors (see below), whose sum is σ = 2458918098. Its totient is φ = 324252912.

The previous prime is 972758747. The next prime is 972758779. The reversal of 972758772 is 277857279.

It can be written as a sum of positive squares in only one way, i.e., 860483556 + 112275216 = 29334^2 + 10596^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972758779) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13510503 + ... + 13510574.

It is an arithmetic number, because the mean of its divisors is an integer number (136606561).

Almost surely, 2^972758772 is an apocalyptic number.

It is an amenable number.

972758772 is an abundant number, since it is smaller than the sum of its proper divisors (1486159326).

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

972758772 is a wasteful number, since it uses less digits than its factorization.

972758772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27021087 (or 27021082 counting only the distinct ones).

The product of its digits is 3457440, while the sum is 54.

The square root of 972758772 is about 31189.0809739563. The cubic root of 972758772 is about 990.8358658508.

The spelling of 972758772 in words is "nine hundred seventy-two million, seven hundred fifty-eight thousand, seven hundred seventy-two".