7972388 has 12 divisors (see below), whose sum is σ = 14772492. Its totient is φ = 3751680.

The previous prime is 7972387. The next prime is 7972411. The reversal of 7972388 is 8832797.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3211264 + 4761124 = 1792^2 + 2182^2 .

It is not an unprimeable number, because it can be changed into a prime (7972387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58553 + ... + 58688.

It is an arithmetic number, because the mean of its divisors is an integer number (1231041).

Almost surely, 2^7972388 is an apocalyptic number.

It is an amenable number.

7972388 is a deficient number, since it is larger than the sum of its proper divisors (6800104).

7972388 is a wasteful number, since it uses less digits than its factorization.

7972388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117262 (or 117260 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 7972388 is about 2823.5417475221. The cubic root of 7972388 is about 199.7696347612.

The spelling of 7972388 in words is "seven million, nine hundred seventy-two thousand, three hundred eighty-eight".