71513488 has 20 divisors (see below), whose sum is σ = 138741120. Its totient is φ = 35709344.

The previous prime is 71513459. The next prime is 71513503. The reversal of 71513488 is 88431517.

It is a super-2 number, since 2×71513488² = 10228357931852288, which contains 22 as substring.

It is a congruent number.

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, 11673 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (6937056).

Almost surely, 2^71513488 is an apocalyptic number.

It is an amenable number.

71513488 is a deficient number, since it is larger than the sum of its proper divisors (67227632).

71513488 is a wasteful number, since it uses less digits than its factorization.

71513488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5934 (or 5928 counting only the distinct ones).

The product of its digits is 26880, while the sum is 37.

The square root of 71513488 is about 8456.5647871934. The cubic root of 71513488 is about 415.0776222928.

The spelling of 71513488 in words is "seventy-one million, five hundred thirteen thousand, four hundred eighty-eight".