78824955 has 16 divisors (see below), whose sum is σ = 137585664. Its totient is φ = 38218080.

The previous prime is 78824953. The next prime is 78824983. The reversal of 78824955 is 55942887.

It is not a de Polignac number, because 78824955 - 2¹ = 78824953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78824951) 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, 238699 + ... + 239028.

It is an arithmetic number, because the mean of its divisors is an integer number (8599104).

Almost surely, 2^78824955 is an apocalyptic number.

78824955 is a deficient number, since it is larger than the sum of its proper divisors (58760709).

78824955 is a wasteful number, since it uses less digits than its factorization.

78824955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477746.

The product of its digits is 806400, while the sum is 48.

The square root of 78824955 is about 8878.3419060093. The cubic root of 78824955 is about 428.7668926640.

The spelling of 78824955 in words is "seventy-eight million, eight hundred twenty-four thousand, nine hundred fifty-five".