78990672 has 40 divisors (see below), whose sum is σ = 206863744. Its totient is φ = 25968384.

The previous prime is 78990647. The next prime is 78990673. The reversal of 78990672 is 27609987.

It is a super-3 number, since 3×78990672³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78990673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7768 + ... + 14775.

Almost surely, 2^78990672 is an apocalyptic number.

It is an amenable number.

78990672 is an abundant number, since it is smaller than the sum of its proper divisors (127873072).

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

78990672 is a wasteful number, since it uses less digits than its factorization.

78990672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22627 (or 22621 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 78990672 is about 8887.6696608279. The cubic root of 78990672 is about 429.0671538693.

The spelling of 78990672 in words is "seventy-eight million, nine hundred ninety thousand, six hundred seventy-two".