78528572 has 12 divisors (see below), whose sum is σ = 137493720. Its totient is φ = 39244656.

The previous prime is 78528551. The next prime is 78528589. The reversal of 78528572 is 27582587.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7679 + ... + 14697.

It is an arithmetic number, because the mean of its divisors is an integer number (11457810).

Almost surely, 2^78528572 is an apocalyptic number.

It is an amenable number.

78528572 is a deficient number, since it is larger than the sum of its proper divisors (58965148).

78528572 is a wasteful number, since it uses less digits than its factorization.

78528572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9820 (or 9818 counting only the distinct ones).

The product of its digits is 313600, while the sum is 44.

The square root of 78528572 is about 8861.6348378840. The cubic root of 78528572 is about 428.2288277634.

The spelling of 78528572 in words is "seventy-eight million, five hundred twenty-eight thousand, five hundred seventy-two".