78314464 has 12 divisors (see below), whose sum is σ = 154181664. Its totient is φ = 39157216.

The previous prime is 78314441. The next prime is 78314501. The reversal of 78314464 is 46441387.

It is a super-2 number, since 2×78314464² = 12266310543214592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1223632 + ... + 1223695.

It is an arithmetic number, because the mean of its divisors is an integer number (12848472).

Almost surely, 2^78314464 is an apocalyptic number.

It is an amenable number.

78314464 is a deficient number, since it is larger than the sum of its proper divisors (75867200).

78314464 is a wasteful number, since it uses less digits than its factorization.

78314464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447337 (or 2447329 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 78314464 is about 8849.5459770544. The cubic root of 78314464 is about 427.8392851621.

The spelling of 78314464 in words is "seventy-eight million, three hundred fourteen thousand, four hundred sixty-four".