71864080 has 40 divisors (see below), whose sum is σ = 175881600. Its totient is φ = 27232128.

The previous prime is 71864077. The next prime is 71864119. The reversal of 71864080 is 8046817.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22120 + ... + 25159.

It is an arithmetic number, because the mean of its divisors is an integer number (4397040).

Almost surely, 2^71864080 is an apocalyptic number.

It is an amenable number.

71864080 is an abundant number, since it is smaller than the sum of its proper divisors (104017520).

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

71864080 is a wasteful number, since it uses less digits than its factorization.

71864080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47311 (or 47305 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 71864080 is about 8477.2684279784. The cubic root of 71864080 is about 415.7548173073.

The spelling of 71864080 in words is "seventy-one million, eight hundred sixty-four thousand, eighty".