78571880 has 16 divisors (see below), whose sum is σ = 176786820. Its totient is φ = 31428736.

The previous prime is 78571877. The next prime is 78571903. The reversal of 78571880 is 8817587.

It can be written as a sum of positive squares in 2 ways, for example, as 76492516 + 2079364 = 8746^2 + 1442^2 .

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, 982109 + ... + 982188.

Almost surely, 2^78571880 is an apocalyptic number.

It is an amenable number.

78571880 is an abundant number, since it is smaller than the sum of its proper divisors (98214940).

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

78571880 is a wasteful number, since it uses less digits than its factorization.

78571880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964308 (or 1964304 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 78571880 is about 8864.0780682483. The cubic root of 78571880 is about 428.3075351067.

The spelling of 78571880 in words is "seventy-eight million, five hundred seventy-one thousand, eight hundred eighty".