78370838 has 32 divisors (see below), whose sum is σ = 146866944. Its totient is φ = 30536352.

The previous prime is 78370837. The next prime is 78370843. The reversal of 78370838 is 83807387.

It is a super-2 number, since 2×78370838² = 12283976497644488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78370837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8981 + ... + 15407.

It is an arithmetic number, because the mean of its divisors is an integer number (4589592).

Almost surely, 2^78370838 is an apocalyptic number.

78370838 is a deficient number, since it is larger than the sum of its proper divisors (68496106).

78370838 is a wasteful number, since it uses less digits than its factorization.

78370838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6516.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 78370838 is about 8852.7305392178. The cubic root of 78370838 is about 427.9419193612.

The spelling of 78370838 in words is "seventy-eight million, three hundred seventy thousand, eight hundred thirty-eight".