78872 has 8 divisors (see below), whose sum is σ = 147900. Its totient is φ = 39432.

The previous prime is 78857. The next prime is 78877. The reversal of 78872 is 27887.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78877) by changing a digit.

78872 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4922 + ... + 4937.

2⁷⁸⁸⁷² is an apocalyptic number.

It is an amenable number.

78872 is a deficient number, since it is larger than the sum of its proper divisors (69028).

78872 is a wasteful number, since it uses less digits than its factorization.

78872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9865 (or 9861 counting only the distinct ones).

The product of its digits is 6272, while the sum is 32.

The square root of 78872 is about 280.8415923612. The cubic root of 78872 is about 42.8852175837.

The spelling of 78872 in words is "seventy-eight thousand, eight hundred seventy-two".