805913238 has 32 divisors (see below), whose sum is σ = 1811287296. Its totient is φ = 237191328.

The previous prime is 805913233. The next prime is 805913249. The reversal of 805913238 is 832319508.

It is a super-2 number, since 2×805913238² = 1298992294367289288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 805913196 and 805913205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805913233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222820 + ... + 226407.

It is an arithmetic number, because the mean of its divisors is an integer number (56602728).

Almost surely, 2^805913238 is an apocalyptic number.

805913238 is an abundant number, since it is smaller than the sum of its proper divisors (1005374058).

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

805913238 is a wasteful number, since it uses less digits than its factorization.

805913238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449268.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 805913238 is about 28388.6110614803. The cubic root of 805913238 is about 930.5993893044.

The spelling of 805913238 in words is "eight hundred five million, nine hundred thirteen thousand, two hundred thirty-eight".