78780034 has 16 divisors (see below), whose sum is σ = 119670048. Its totient is φ = 38892672.

The previous prime is 78780017. The next prime is 78780043. The reversal of 78780034 is 43008787.

It is a junction number, because it is equal to n+sod(n) for n = 78779975 and 78780002.

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, 116722 + ... + 117394.

It is an arithmetic number, because the mean of its divisors is an integer number (7479378).

Almost surely, 2^78780034 is an apocalyptic number.

78780034 is a deficient number, since it is larger than the sum of its proper divisors (40890014).

78780034 is a wasteful number, since it uses less digits than its factorization.

78780034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 78780034 is about 8875.8117375258. The cubic root of 78780034 is about 428.6854282026.

The spelling of 78780034 in words is "seventy-eight million, seven hundred eighty thousand, thirty-four".