71239952 has 20 divisors (see below), whose sum is σ = 157745856. Its totient is φ = 30531360.

The previous prime is 71239951. The next prime is 71239957. The reversal of 71239952 is 25993217.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71239951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317924 + ... + 318147.

Almost surely, 2^71239952 is an apocalyptic number.

It is an amenable number.

71239952 is an abundant number, since it is smaller than the sum of its proper divisors (86505904).

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

71239952 is a wasteful number, since it uses less digits than its factorization.

71239952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636086 (or 636080 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 71239952 is about 8440.3762949290. The cubic root of 71239952 is about 414.5477281230.

The spelling of 71239952 in words is "seventy-one million, two hundred thirty-nine thousand, nine hundred fifty-two".