78529144 has 16 divisors (see below), whose sum is σ = 147390120. Its totient is φ = 39225120.

The previous prime is 78529117. The next prime is 78529193. The reversal of 78529144 is 44192587.

It is a junction number, because it is equal to n+sod(n) for n = 78529097 and 78529106.

It is a congruent number.

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, 4614 + ... + 13354.

Almost surely, 2^78529144 is an apocalyptic number.

It is an amenable number.

78529144 is a deficient number, since it is larger than the sum of its proper divisors (68860976).

78529144 is a wasteful number, since it uses less digits than its factorization.

78529144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870 (or 9866 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 78529144 is about 8861.6671117798. The cubic root of 78529144 is about 428.2298674966.

It can be divided in two parts, 785 and 29144, that added together give a square (29929 = 173²).

The spelling of 78529144 in words is "seventy-eight million, five hundred twenty-nine thousand, one hundred forty-four".