78582180 has 48 divisors (see below), whose sum is σ = 220651200. Its totient is φ = 20896128.

The previous prime is 78582173. The next prime is 78582187. The reversal of 78582180 is 8128587.

It is an interprime number because it is at equal distance from previous prime (78582173) and next prime (78582187).

It is not an unprimeable number, because it can be changed into a prime (78582187) 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, 22171 + ... + 25469.

It is an arithmetic number, because the mean of its divisors is an integer number (4596900).

Almost surely, 2^78582180 is an apocalyptic number.

It is an amenable number.

78582180 is an abundant number, since it is smaller than the sum of its proper divisors (142069020).

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

78582180 is a wasteful number, since it uses less digits than its factorization.

78582180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 78582180 is about 8864.6590458968. The cubic root of 78582180 is about 428.3262499228.

The spelling of 78582180 in words is "seventy-eight million, five hundred eighty-two thousand, one hundred eighty".