78056580 has 48 divisors (see below), whose sum is σ = 249782400. Its totient is φ = 17841408.

The previous prime is 78056557. The next prime is 78056597. The reversal of 78056580 is 8565087.

It is a happy number.

It is a super-3 number, since 3×78056580³ (a number of 25 digits) contains 333 as substring.

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, 92505 + ... + 93344.

It is an arithmetic number, because the mean of its divisors is an integer number (5203800).

Almost surely, 2^78056580 is an apocalyptic number.

78056580 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78056580 is an abundant number, since it is smaller than the sum of its proper divisors (171725820).

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

78056580 is a wasteful number, since it uses less digits than its factorization.

78056580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185868 (or 185866 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 78056580 is about 8834.9634973779. The cubic root of 78056580 is about 427.3691538957.

The spelling of 78056580 in words is "seventy-eight million, fifty-six thousand, five hundred eighty".