71990250 has 32 divisors (see below), whose sum is σ = 179689536. Its totient is φ = 19197200.

The previous prime is 71990203. The next prime is 71990273. The reversal of 71990250 is 5209917.

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, 47244 + ... + 48743.

It is an arithmetic number, because the mean of its divisors is an integer number (5615298).

Almost surely, 2^71990250 is an apocalyptic number.

71990250 is an abundant number, since it is smaller than the sum of its proper divisors (107699286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71990250 is a wasteful number, since it uses less digits than its factorization.

71990250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96007 (or 95997 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 33.

The square root of 71990250 is about 8484.7068305275. The cubic root of 71990250 is about 415.9979852282.

The spelling of 71990250 in words is "seventy-one million, nine hundred ninety thousand, two hundred fifty".