71239896 has 192 divisors, whose sum is σ = 242161920. Its totient is φ = 18420480.

The previous prime is 71239879. The next prime is 71239943. The reversal of 71239896 is 69893217.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 543751 + ... + 543881.

It is an arithmetic number, because the mean of its divisors is an integer number (1261260).

Almost surely, 2^71239896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71239896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121080960).

71239896 is an abundant number, since it is smaller than the sum of its proper divisors (170922024).

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

71239896 is a wasteful number, since it uses less digits than its factorization.

71239896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 239 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 71239896 is about 8440.3729775407. The cubic root of 71239896 is about 414.5476195010.

The spelling of 71239896 in words is "seventy-one million, two hundred thirty-nine thousand, eight hundred ninety-six".