78573492 has 36 divisors (see below), whose sum is σ = 200672836. Its totient is φ = 25920000.

The previous prime is 78573487. The next prime is 78573529. The reversal of 78573492 is 29437587.

78573492 is a `hidden beast` number, since 78 + 573 + 4 + 9 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 65221776 + 13351716 = 8076^2 + 3654^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7759 + ... + 14742.

Almost surely, 2^78573492 is an apocalyptic number.

It is an amenable number.

78573492 is an abundant number, since it is smaller than the sum of its proper divisors (122099344).

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

78573492 is a wasteful number, since it uses less digits than its factorization.

78573492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22608 (or 22603 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 78573492 is about 8864.1689965839. The cubic root of 78573492 is about 428.3104641742.

It can be divided in two parts, 7857 and 3492, that multiplied together give a square (27436644 = 5238²).

The spelling of 78573492 in words is "seventy-eight million, five hundred seventy-three thousand, four hundred ninety-two".