78163834 has 32 divisors (see below), whose sum is σ = 145612800. Its totient is φ = 30708720.

The previous prime is 78163819. The next prime is 78163837. The reversal of 78163834 is 43836187.

It is a super-2 number, since 2×78163834² = 12219169891159112, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (78163837) 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, 3507 + ... + 12985.

It is an arithmetic number, because the mean of its divisors is an integer number (4550400).

Almost surely, 2^78163834 is an apocalyptic number.

78163834 is a deficient number, since it is larger than the sum of its proper divisors (67448966).

78163834 is a wasteful number, since it uses less digits than its factorization.

78163834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538.

The product of its digits is 96768, while the sum is 40.

The square root of 78163834 is about 8841.0312746874. The cubic root of 78163834 is about 427.5648071557.

The spelling of 78163834 in words is "seventy-eight million, one hundred sixty-three thousand, eight hundred thirty-four".