78515058 has 8 divisors (see below), whose sum is σ = 157030128. Its totient is φ = 26171684.

The previous prime is 78515057. The next prime is 78515071. The reversal of 78515058 is 85051587.

It is a sphenic number, since it is the product of 3 distinct primes.

78515058 is an admirable number.

It is a super-2 number, since 2×78515058² = 12329228665486728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78515057) 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 3 ways as a sum of consecutive naturals, for example, 6542916 + ... + 6542927.

It is an arithmetic number, because the mean of its divisors is an integer number (19628766).

Almost surely, 2^78515058 is an apocalyptic number.

78515058 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78515058 is a wasteful number, since it uses less digits than its factorization.

78515058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13085848.

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 78515058 is about 8860.8723046887. The cubic root of 78515058 is about 428.2042616883.

The spelling of 78515058 in words is "seventy-eight million, five hundred fifteen thousand, fifty-eight".