71587972 has 12 divisors (see below), whose sum is σ = 131872720. Its totient is φ = 33910056.

The previous prime is 71587939. The next prime is 71587973. The reversal of 71587972 is 27978517.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (71587973) 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, 470898 + ... + 471049.

Almost surely, 2^71587972 is an apocalyptic number.

It is an amenable number.

71587972 is a deficient number, since it is larger than the sum of its proper divisors (60284748).

71587972 is a wasteful number, since it uses less digits than its factorization.

71587972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941970 (or 941968 counting only the distinct ones).

The product of its digits is 246960, while the sum is 46.

The square root of 71587972 is about 8460.9675569642. The cubic root of 71587972 is about 415.2216786337.

The spelling of 71587972 in words is "seventy-one million, five hundred eighty-seven thousand, nine hundred seventy-two".