78260984 has 8 divisors (see below), whose sum is σ = 146739360. Its totient is φ = 39130488.

The previous prime is 78260971. The next prime is 78260999. The reversal of 78260984 is 48906287.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78260984² = 12249563233296512, 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4891304 + ... + 4891319.

It is an arithmetic number, because the mean of its divisors is an integer number (18342420).

Almost surely, 2^78260984 is an apocalyptic number.

It is an amenable number.

78260984 is a deficient number, since it is larger than the sum of its proper divisors (68478376).

78260984 is a wasteful number, since it uses less digits than its factorization.

78260984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9782629 (or 9782625 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 78260984 is about 8846.5238370786. The cubic root of 78260984 is about 427.7418742279.

The spelling of 78260984 in words is "seventy-eight million, two hundred sixty thousand, nine hundred eighty-four".