813620238 has 32 divisors (see below), whose sum is σ = 1724737536. Its totient is φ = 254990208.

The previous prime is 813620209. The next prime is 813620251. The reversal of 813620238 is 832026318.

It is a junction number, because it is equal to n+sod(n) for n = 813620199 and 813620208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110995 + ... + 118097.

It is an arithmetic number, because the mean of its divisors is an integer number (53898048).

Almost surely, 2^813620238 is an apocalyptic number.

813620238 is an abundant number, since it is smaller than the sum of its proper divisors (911117298).

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

813620238 is a wasteful number, since it uses less digits than its factorization.

813620238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8248.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 813620238 is about 28524.0291333465. The cubic root of 813620238 is about 933.5564436291.

The spelling of 813620238 in words is "eight hundred thirteen million, six hundred twenty thousand, two hundred thirty-eight".