7638044 has 12 divisors (see below), whose sum is σ = 13393464. Its totient is φ = 3811344.

The previous prime is 7638031. The next prime is 7638053. The reversal of 7638044 is 4408367.

It is a happy number.

It is a super-2 number, since 2×7638044² = 116679432291872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7638044.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722 + ... + 3974.

It is an arithmetic number, because the mean of its divisors is an integer number (1116122).

Almost surely, 2^7638044 is an apocalyptic number.

It is an amenable number.

7638044 is a deficient number, since it is larger than the sum of its proper divisors (5755420).

7638044 is a wasteful number, since it uses less digits than its factorization.

7638044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 7638044 is about 2763.7011415853. The cubic root of 7638044 is about 196.9370305586.

The spelling of 7638044 in words is "seven million, six hundred thirty-eight thousand, forty-four".