71535912 has 128 divisors (see below), whose sum is σ = 218803200. Its totient is φ = 19035648.

The previous prime is 71535901. The next prime is 71535913. The reversal of 71535912 is 21953517.

It is not an unprimeable number, because it can be changed into a prime (71535913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232863 + ... + 233169.

It is an arithmetic number, because the mean of its divisors is an integer number (1709400).

Almost surely, 2^71535912 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 71535912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109401600).

71535912 is an abundant number, since it is smaller than the sum of its proper divisors (147267288).

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

71535912 is a wasteful number, since it uses less digits than its factorization.

71535912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 411 counting only the distinct ones).

The product of its digits is 9450, while the sum is 33.

The square root of 71535912 is about 8457.8905171443. The cubic root of 71535912 is about 415.1210021184.

The spelling of 71535912 in words is "seventy-one million, five hundred thirty-five thousand, nine hundred twelve".