78515034 has 24 divisors (see below), whose sum is σ = 170040672. Its totient is φ = 24158160.

The previous prime is 78515029. The next prime is 78515057. The reversal of 78515034 is 43051587.

It is a super-2 number, since 2×78515034² = 12329221128042312, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78514986 and 78515004.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 37702 + ... + 39729.

It is an arithmetic number, because the mean of its divisors is an integer number (7085028).

Almost surely, 2^78515034 is an apocalyptic number.

78515034 is an abundant number, since it is smaller than the sum of its proper divisors (91525638).

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

78515034 is a wasteful number, since it uses less digits than its factorization.

78515034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77462 (or 77449 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 78515034 is about 8860.8709504202. The cubic root of 78515034 is about 428.2042180581.

The spelling of 78515034 in words is "seventy-eight million, five hundred fifteen thousand, thirty-four".