71899748 has 12 divisors (see below), whose sum is σ = 131295360. Its totient is φ = 34386792.

The previous prime is 71899739. The next prime is 71899759. The reversal of 71899748 is 84799817.

It is a self number, because there is not a number n which added to its sum of digits gives 71899748.

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, 390668 + ... + 390851.

It is an arithmetic number, because the mean of its divisors is an integer number (10941280).

Almost surely, 2^71899748 is an apocalyptic number.

It is an amenable number.

71899748 is a deficient number, since it is larger than the sum of its proper divisors (59395612).

71899748 is a wasteful number, since it uses less digits than its factorization.

71899748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781546 (or 781544 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 53.

The square root of 71899748 is about 8479.3719107019. The cubic root of 71899748 is about 415.8235892173.

The spelling of 71899748 in words is "seventy-one million, eight hundred ninety-nine thousand, seven hundred forty-eight".