7390638 has 48 divisors (see below), whose sum is σ = 16713216. Its totient is φ = 2358720.

The previous prime is 7390633. The next prime is 7390651. The reversal of 7390638 is 8360937.

7390638 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7390633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58131 + ... + 58257.

It is an arithmetic number, because the mean of its divisors is an integer number (348192).

Almost surely, 2^7390638 is an apocalyptic number.

7390638 is an abundant number, since it is smaller than the sum of its proper divisors (9322578).

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

7390638 is a wasteful number, since it uses less digits than its factorization.

7390638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 7390638 is about 2718.5727873279. The cubic root of 7390638 is about 194.7873026002.

Subtracting 7390638 from its reverse (8360937), we obtain a cube (970299 = 99³).

The spelling of 7390638 in words is "seven million, three hundred ninety thousand, six hundred thirty-eight".