7638380 has 24 divisors (see below), whose sum is σ = 16885680. Its totient is φ = 2894400.

The previous prime is 7638373. The next prime is 7638383. The reversal of 7638380 is 838367.

7638380 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 7638380.

It is not an unprimeable number, because it can be changed into a prime (7638383) 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, 9671 + ... + 10430.

It is an arithmetic number, because the mean of its divisors is an integer number (703570).

Almost surely, 2^7638380 is an apocalyptic number.

It is an amenable number.

7638380 is an abundant number, since it is smaller than the sum of its proper divisors (9247300).

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

7638380 is a wasteful number, since it uses less digits than its factorization.

7638380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20129 (or 20127 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 7638380 is about 2763.7619289657. The cubic root of 7638380 is about 196.9399182906.

The spelling of 7638380 in words is "seven million, six hundred thirty-eight thousand, three hundred eighty".