78364412 has 12 divisors (see below), whose sum is σ = 156728880. Its totient is φ = 33584736.

The previous prime is 78364397. The next prime is 78364423. The reversal of 78364412 is 21446387.

78364412 is an admirable number.

It is a super-2 number, since 2×78364412² = 12281962136211488, 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 in 3 ways as a sum of consecutive naturals, for example, 1399337 + ... + 1399392.

It is an arithmetic number, because the mean of its divisors is an integer number (13060740).

Almost surely, 2^78364412 is an apocalyptic number.

It is an amenable number.

78364412 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.

78364412 is a wasteful number, since it uses less digits than its factorization.

78364412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798740 (or 2798738 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 78364412 is about 8852.3675929098. The cubic root of 78364412 is about 427.9302227063.

The spelling of 78364412 in words is "seventy-eight million, three hundred sixty-four thousand, four hundred twelve".