71488916 has 6 divisors (see below), whose sum is σ = 125105610. Its totient is φ = 35744456.

The previous prime is 71488909. The next prime is 71488931. The reversal of 71488916 is 61988417.

It can be written as a sum of positive squares in only one way, i.e., 57456400 + 14032516 = 7580^2 + 3746^2 .

It is a super-2 number, since 2×71488916² = 10221330221710112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8936111 + ... + 8936118.

It is an arithmetic number, because the mean of its divisors is an integer number (20850935).

Almost surely, 2^71488916 is an apocalyptic number.

It is an amenable number.

71488916 is a deficient number, since it is larger than the sum of its proper divisors (53616694).

71488916 is a wasteful number, since it uses less digits than its factorization.

71488916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17872233 (or 17872231 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 71488916 is about 8455.1118265816. Note that the first 3 decimals coincide. The cubic root of 71488916 is about 415.0300766899.

The spelling of 71488916 in words is "seventy-one million, four hundred eighty-eight thousand, nine hundred sixteen".