78464120 has 32 divisors (see below), whose sum is σ = 201765600. Its totient is φ = 26901888.

The previous prime is 78464107. The next prime is 78464171. The reversal of 78464120 is 2146487.

It is a congruent number.

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, 139835 + ... + 140394.

It is an arithmetic number, because the mean of its divisors is an integer number (6305175).

Almost surely, 2^78464120 is an apocalyptic number.

78464120 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78464120 is an abundant number, since it is smaller than the sum of its proper divisors (123301480).

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

78464120 is a wasteful number, since it uses less digits than its factorization.

78464120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280247 (or 280243 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 78464120 is about 8857.9975163690. The cubic root of 78464120 is about 428.1116400186. Note that the first 3 decimals are identical.

The spelling of 78464120 in words is "seventy-eight million, four hundred sixty-four thousand, one hundred twenty".