78212364 has 24 divisors (see below), whose sum is σ = 182645568. Its totient is φ = 26049360.

The previous prime is 78212363. The next prime is 78212369. The reversal of 78212364 is 46321287.

It is a super-2 number, since 2×78212364² = 12234347764936992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78212363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20659 + ... + 24149.

It is an arithmetic number, because the mean of its divisors is an integer number (7610232).

Almost surely, 2^78212364 is an apocalyptic number.

It is an amenable number.

78212364 is an abundant number, since it is smaller than the sum of its proper divisors (104433204).

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

78212364 is a wasteful number, since it uses less digits than its factorization.

78212364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5365 (or 5363 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 78212364 is about 8843.7754381260. The cubic root of 78212364 is about 427.6532770025.

The spelling of 78212364 in words is "seventy-eight million, two hundred twelve thousand, three hundred sixty-four".