71908236 has 60 divisors (see below), whose sum is σ = 197893080. Its totient is φ = 22705920.

The previous prime is 71908231. The next prime is 71908247. The reversal of 71908236 is 63280917.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 71908236.

It is not an unprimeable number, because it can be changed into a prime (71908231) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 316 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (3298218).

Almost surely, 2^71908236 is an apocalyptic number.

71908236 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71908236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98946540).

71908236 is an abundant number, since it is smaller than the sum of its proper divisors (125984844).

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

71908236 is a wasteful number, since it uses less digits than its factorization.

71908236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11716 (or 11705 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 71908236 is about 8479.8724047004. The cubic root of 71908236 is about 415.8399516842.

The spelling of 71908236 in words is "seventy-one million, nine hundred eight thousand, two hundred thirty-six".