71890258 has 16 divisors (see below), whose sum is σ = 117833760. Its totient is φ = 32623200.

The previous prime is 71890193. The next prime is 71890267. The reversal of 71890258 is 85209817.

It is a self number, because there is not a number n which added to its sum of digits gives 71890258.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12838 + ... + 17566.

It is an arithmetic number, because the mean of its divisors is an integer number (7364610).

Almost surely, 2^71890258 is an apocalyptic number.

71890258 is a deficient number, since it is larger than the sum of its proper divisors (45943502).

71890258 is a wasteful number, since it uses less digits than its factorization.

71890258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5433.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 71890258 is about 8478.8122989013. The cubic root of 71890258 is about 415.8052936525.

The spelling of 71890258 in words is "seventy-one million, eight hundred ninety thousand, two hundred fifty-eight".