71723580 has 48 divisors (see below), whose sum is σ = 201868800. Its totient is φ = 19027008.

The previous prime is 71723573. The next prime is 71723609. The reversal of 71723580 is 8532717.

It is a congruent number.

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, 8937 + ... + 14943.

It is an arithmetic number, because the mean of its divisors is an integer number (4205600).

Almost surely, 2^71723580 is an apocalyptic number.

It is an amenable number.

71723580 is an abundant number, since it is smaller than the sum of its proper divisors (130145220).

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

71723580 is a wasteful number, since it uses less digits than its factorization.

71723580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6218 (or 6216 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 71723580 is about 8468.9775061692. The cubic root of 71723580 is about 415.4836959490.

The spelling of 71723580 in words is "seventy-one million, seven hundred twenty-three thousand, five hundred eighty".