7638290 has 16 divisors (see below), whose sum is σ = 14999040. Its totient is φ = 2777520.

The previous prime is 7638289. The next prime is 7638313. The reversal of 7638290 is 928367.

It is a self number, because there is not a number n which added to its sum of digits gives 7638290.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34610 + ... + 34829.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 2^7638290 is an apocalyptic number.

7638290 is a deficient number, since it is larger than the sum of its proper divisors (7360750).

7638290 is a wasteful number, since it uses less digits than its factorization.

7638290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69457.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 7638290 is about 2763.7456467627. The cubic root of 7638290 is about 196.9391447993.

The spelling of 7638290 in words is "seven million, six hundred thirty-eight thousand, two hundred ninety".