78510572 has 24 divisors (see below), whose sum is σ = 160853280. Its totient is φ = 32826240.

The previous prime is 78510563. The next prime is 78510577. The reversal of 78510572 is 27501587.

It is not an unprimeable number, because it can be changed into a prime (78510577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33047 + ... + 35342.

It is an arithmetic number, because the mean of its divisors is an integer number (6702220).

Almost surely, 2^78510572 is an apocalyptic number.

It is an amenable number.

78510572 is an abundant number, since it is smaller than the sum of its proper divisors (82342708).

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

78510572 is a wasteful number, since it uses less digits than its factorization.

78510572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68441 (or 68439 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 78510572 is about 8860.6191657243. The cubic root of 78510572 is about 428.1961063062.

The spelling of 78510572 in words is "seventy-eight million, five hundred ten thousand, five hundred seventy-two".