7981272 has 48 divisors (see below), whose sum is σ = 23281440. Its totient is φ = 2455488.

The previous prime is 7981247. The next prime is 7981283. The reversal of 7981272 is 2721897.

7981272 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3328 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (485030).

Almost surely, 2^7981272 is an apocalyptic number.

7981272 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

7981272 is an abundant number, since it is smaller than the sum of its proper divisors (15300168).

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

7981272 is a wasteful number, since it uses less digits than its factorization.

7981272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8552 (or 8545 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 7981272 is about 2825.1145109535. The cubic root of 7981272 is about 199.8438113907.

The spelling of 7981272 in words is "seven million, nine hundred eighty-one thousand, two hundred seventy-two".