7893972 has 18 divisors (see below), whose sum is σ = 19954298. Its totient is φ = 2631312.

The previous prime is 7893943. The next prime is 7893989. The reversal of 7893972 is 2793987.

It can be written as a sum of positive squares in only one way, i.e., 7322436 + 571536 = 2706^2 + 756^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109603 + ... + 109674.

Almost surely, 2^7893972 is an apocalyptic number.

It is an amenable number.

7893972 is an abundant number, since it is smaller than the sum of its proper divisors (12060326).

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

7893972 is a wasteful number, since it uses less digits than its factorization.

7893972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219287 (or 219282 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 7893972 is about 2809.6213267983. The cubic root of 7893972 is about 199.1125008853.

It can be divided in two parts, 789 and 3972, that added together give a square (4761 = 69²).

The spelling of 7893972 in words is "seven million, eight hundred ninety-three thousand, nine hundred seventy-two".