78984500 has 48 divisors (see below), whose sum is σ = 197154048. Its totient is φ = 27079200.

The previous prime is 78984457. The next prime is 78984523. The reversal of 78984500 is 548987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7784 + ... + 14783.

It is an arithmetic number, because the mean of its divisors is an integer number (4107376).

Almost surely, 2^78984500 is an apocalyptic number.

78984500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78984500 is an abundant number, since it is smaller than the sum of its proper divisors (118169548).

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

78984500 is a wasteful number, since it uses less digits than its factorization.

78984500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22593 (or 22581 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 78984500 is about 8887.3224314188. The cubic root of 78984500 is about 429.0559784086.

The spelling of 78984500 in words is "seventy-eight million, nine hundred eighty-four thousand, five hundred".