78244672 has 28 divisors (see below), whose sum is σ = 169383456. Its totient is φ = 35565440.

The previous prime is 78244667. The next prime is 78244721. The reversal of 78244672 is 27644287.

It is a super-2 number, since 2×78244672² = 12244457392775168, which contains 22 as substring.

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, 54868 + ... + 56275.

Almost surely, 2^78244672 is an apocalyptic number.

It is an amenable number.

78244672 is an abundant number, since it is smaller than the sum of its proper divisors (91138784).

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

78244672 is a wasteful number, since it uses less digits than its factorization.

78244672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111166 (or 111156 counting only the distinct ones).

The product of its digits is 150528, while the sum is 40.

The square root of 78244672 is about 8845.6018449849. The cubic root of 78244672 is about 427.7121539683.

It can be divided in two parts, 782 and 44672, that added together give a palindrome (45454).

The spelling of 78244672 in words is "seventy-eight million, two hundred forty-four thousand, six hundred seventy-two".