71339990 has 32 divisors (see below), whose sum is σ = 140361984. Its totient is φ = 25989120.

The previous prime is 71339977. The next prime is 71340001. The reversal of 71339990 is 9993317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (4386312).

Almost surely, 2^71339990 is an apocalyptic number.

71339990 is a deficient number, since it is larger than the sum of its proper divisors (69021994).

71339990 is a wasteful number, since it uses less digits than its factorization.

71339990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13592.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 71339990 is about 8446.3003735363. The cubic root of 71339990 is about 414.7416788864.

The spelling of 71339990 in words is "seventy-one million, three hundred thirty-nine thousand, nine hundred ninety".