2638972 has 18 divisors (see below), whose sum is σ = 5295192. Its totient is φ = 1127304.

The previous prime is 2638949. The next prime is 2638973. The reversal of 2638972 is 2798362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638973) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8443 + ... + 8749.

2^2638972 is an apocalyptic number.

It is an amenable number.

2638972 is an abundant number, since it is smaller than the sum of its proper divisors (2656220).

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

2638972 is an equidigital number, since it uses as much as digits as its factorization.

2638972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 316 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 2638972 is about 1624.4913049937. The cubic root of 2638972 is about 138.1905230918.

Multiplying 2638972 by its product of digits (36288), we get a square (95763015936 = 309456²).

The spelling of 2638972 in words is "two million, six hundred thirty-eight thousand, nine hundred seventy-two".