78133180 has 12 divisors (see below), whose sum is σ = 164079720. Its totient is φ = 31253264.

The previous prime is 78133177. The next prime is 78133217. The reversal of 78133180 is 8133187.

It is a super-2 number, since 2×78133180² = 12209587633824800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953310 + ... + 1953349.

It is an arithmetic number, because the mean of its divisors is an integer number (13673310).

Almost surely, 2^78133180 is an apocalyptic number.

It is an amenable number.

78133180 is an abundant number, since it is smaller than the sum of its proper divisors (85946540).

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

78133180 is a wasteful number, since it uses less digits than its factorization.

78133180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906668 (or 3906666 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 78133180 is about 8839.2974833976. The cubic root of 78133180 is about 427.5089062586.

The spelling of 78133180 in words is "seventy-eight million, one hundred thirty-three thousand, one hundred eighty".