7428272 has 20 divisors (see below), whose sum is σ = 14470800. Its totient is φ = 3693888.

The previous prime is 7428271. The next prime is 7428283. The reversal of 7428272 is 2728247.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7428271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2018 + ... + 4350.

It is an arithmetic number, because the mean of its divisors is an integer number (723540).

Almost surely, 2^7428272 is an apocalyptic number.

It is an amenable number.

7428272 is a deficient number, since it is larger than the sum of its proper divisors (7042528).

7428272 is a wasteful number, since it uses less digits than its factorization.

7428272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540 (or 2534 counting only the distinct ones).

The product of its digits is 12544, while the sum is 32.

The square root of 7428272 is about 2725.4856447980. The cubic root of 7428272 is about 195.1173696221.

The spelling of 7428272 in words is "seven million, four hundred twenty-eight thousand, two hundred seventy-two".