78570436 has 12 divisors (see below), whose sum is σ = 157140928. Its totient is φ = 33673032.

The previous prime is 78570419. The next prime is 78570449. The reversal of 78570436 is 63407587.

78570436 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 1403016 + ... + 1403071.

Almost surely, 2^78570436 is an apocalyptic number.

It is an amenable number.

78570436 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.

78570436 is a wasteful number, since it uses less digits than its factorization.

78570436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806098 (or 2806096 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 78570436 is about 8863.9966155228. The cubic root of 78570436 is about 428.3049112678.

The spelling of 78570436 in words is "seventy-eight million, five hundred seventy thousand, four hundred thirty-six".