2638772 has 6 divisors (see below), whose sum is σ = 4617858. Its totient is φ = 1319384.

The previous prime is 2638771. The next prime is 2638787. The reversal of 2638772 is 2778362.

2638772 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2579236 + 59536 = 1606^2 + 244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329843 + ... + 329850.

It is an arithmetic number, because the mean of its divisors is an integer number (769643).

2^2638772 is an apocalyptic number.

It is an amenable number.

2638772 is a deficient number, since it is larger than the sum of its proper divisors (1979086).

2638772 is a wasteful number, since it uses less digits than its factorization.

2638772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659697 (or 659695 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 2638772 is about 1624.4297460955. The cubic root of 2638772 is about 138.1870319845.

The spelling of 2638772 in words is "two million, six hundred thirty-eight thousand, seven hundred seventy-two".