78988023 has 6 divisors (see below), whose sum is σ = 114093824. Its totient is φ = 52658676.

The previous prime is 78987989. The next prime is 78988027. The reversal of 78988023 is 32088987.

It is not a de Polignac number, because 78988023 - 2²⁶ = 11879159 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78988023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78988027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4388215 + ... + 4388232.

Almost surely, 2^78988023 is an apocalyptic number.

78988023 is a deficient number, since it is larger than the sum of its proper divisors (35105801).

78988023 is a wasteful number, since it uses less digits than its factorization.

78988023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8776453 (or 8776450 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 78988023 is about 8887.5206328874. The cubic root of 78988023 is about 429.0623574735.

The spelling of 78988023 in words is "seventy-eight million, nine hundred eighty-eight thousand, twenty-three".