78464870 has 48 divisors (see below), whose sum is σ = 163462320. Its totient is φ = 27023040.

The previous prime is 78464833. The next prime is 78464899. The reversal of 78464870 is 7846487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21284 + ... + 24696.

It is an arithmetic number, because the mean of its divisors is an integer number (3405465).

Almost surely, 2^78464870 is an apocalyptic number.

78464870 is an abundant number, since it is smaller than the sum of its proper divisors (84997450).

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

78464870 is a wasteful number, since it uses less digits than its factorization.

78464870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 78464870 is about 8858.0398508925. The cubic root of 78464870 is about 428.1130040505.

The spelling of 78464870 in words is "seventy-eight million, four hundred sixty-four thousand, eight hundred seventy".