78412980 has 48 divisors (see below), whose sum is σ = 229106304. Its totient is φ = 20000640.

The previous prime is 78412979. The next prime is 78412991. The reversal of 78412980 is 8921487.

It is a super-2 number, since 2×78412980² = 12297190864960800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27031 + ... + 29790.

It is an arithmetic number, because the mean of its divisors is an integer number (4773048).

Almost surely, 2^78412980 is an apocalyptic number.

It is an amenable number.

78412980 is an abundant number, since it is smaller than the sum of its proper divisors (150693324).

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

78412980 is a wasteful number, since it uses less digits than its factorization.

78412980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56856 (or 56854 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 78412980 is about 8855.1103889223. The cubic root of 78412980 is about 428.0186107143.

The spelling of 78412980 in words is "seventy-eight million, four hundred twelve thousand, nine hundred eighty".