7272387 has 12 divisors (see below), whose sum is σ = 10788960. Its totient is φ = 4717008.

The previous prime is 7272373. The next prime is 7272409. The reversal of 7272387 is 7832727.

7272387 is a `hidden beast` number, since 7 + 272 + 387 = 666.

It is not a de Polignac number, because 7272387 - 2⁸ = 7272131 is a prime.

It is a super-2 number, since 2×7272387² = 105775225355538, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

7272387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7272337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10587 + ... + 11252.

It is an arithmetic number, because the mean of its divisors is an integer number (899080).

Almost surely, 2^7272387 is an apocalyptic number.

7272387 is a deficient number, since it is larger than the sum of its proper divisors (3516573).

7272387 is a wasteful number, since it uses less digits than its factorization.

7272387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21882 (or 21879 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 7272387 is about 2696.7363608629. The cubic root of 7272387 is about 193.7428395550.

The spelling of 7272387 in words is "seven million, two hundred seventy-two thousand, three hundred eighty-seven".