7272438 has 16 divisors (see below), whose sum is σ = 14574576. Its totient is φ = 2419200.

The previous prime is 7272437. The next prime is 7272449. The reversal of 7272438 is 8342727.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7272399 and 7272408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138 + ... + 4938.

It is an arithmetic number, because the mean of its divisors is an integer number (910911).

Almost surely, 2^7272438 is an apocalyptic number.

7272438 is an abundant number, since it is smaller than the sum of its proper divisors (7302138).

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

7272438 is a wasteful number, since it uses less digits than its factorization.

7272438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2479.

The product of its digits is 18816, while the sum is 33.

The square root of 7272438 is about 2696.7458167206. The cubic root of 7272438 is about 193.7432924490.

The spelling of 7272438 in words is "seven million, two hundred seventy-two thousand, four hundred thirty-eight".