71840252 has 24 divisors (see below), whose sum is σ = 140071680. Its totient is φ = 31958960.

The previous prime is 71840239. The next prime is 71840261. The reversal of 71840252 is 25204817.

It is a super-2 number, since 2×71840252² = 10322043614847008, which contains 22 as substring.

It is a congruent number.

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, 15302 + ... + 19437.

It is an arithmetic number, because the mean of its divisors is an integer number (5836320).

Almost surely, 2^71840252 is an apocalyptic number.

It is an amenable number.

71840252 is a deficient number, since it is larger than the sum of its proper divisors (68231428).

71840252 is a wasteful number, since it uses less digits than its factorization.

71840252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34801 (or 34799 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 71840252 is about 8475.8629059229. The cubic root of 71840252 is about 415.7088615674.

The spelling of 71840252 in words is "seventy-one million, eight hundred forty thousand, two hundred fifty-two".