78852891 has 16 divisors (see below), whose sum is σ = 113912064. Its totient is φ = 48230304.

The previous prime is 78852877. The next prime is 78852929. The reversal of 78852891 is 19825887.

It is not a de Polignac number, because 78852891 - 2⁵ = 78852859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78852891.

It is not an unprimeable number, because it can be changed into a prime (78852691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460 + ... + 12566.

It is an arithmetic number, because the mean of its divisors is an integer number (7119504).

Almost surely, 2^78852891 is an apocalyptic number.

78852891 is a deficient number, since it is larger than the sum of its proper divisors (35059173).

78852891 is a wasteful number, since it uses less digits than its factorization.

78852891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12290.

The product of its digits is 322560, while the sum is 48.

The square root of 78852891 is about 8879.9150333773. The cubic root of 78852891 is about 428.8175391341.

The spelling of 78852891 in words is "seventy-eight million, eight hundred fifty-two thousand, eight hundred ninety-one".