78824020 has 24 divisors (see below), whose sum is σ = 180579168. Its totient is φ = 28663200.

The previous prime is 78823999. The next prime is 78824047. The reversal of 78824020 is 2042887.

It is a super-2 number, since 2×78824020² = 12426452257920800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178926 + ... + 179365.

It is an arithmetic number, because the mean of its divisors is an integer number (7524132).

Almost surely, 2^78824020 is an apocalyptic number.

It is an amenable number.

78824020 is an abundant number, since it is smaller than the sum of its proper divisors (101755148).

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

78824020 is a wasteful number, since it uses less digits than its factorization.

78824020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358311 (or 358309 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 78824020 is about 8878.2892496246. The cubic root of 78824020 is about 428.7651973522.

The spelling of 78824020 in words is "seventy-eight million, eight hundred twenty-four thousand, twenty".