71285560 has 16 divisors (see below), whose sum is σ = 160392600. Its totient is φ = 28514208.

The previous prime is 71285551. The next prime is 71285561. The reversal of 71285560 is 6558217.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71285561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891030 + ... + 891109.

Almost surely, 2^71285560 is an apocalyptic number.

It is an amenable number.

71285560 is an abundant number, since it is smaller than the sum of its proper divisors (89107040).

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

71285560 is a wasteful number, since it uses less digits than its factorization.

71285560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782150 (or 1782146 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 71285560 is about 8443.0776379233. The cubic root of 71285560 is about 414.6361740909.

The spelling of 71285560 in words is "seventy-one million, two hundred eighty-five thousand, five hundred sixty".