71642312 has 48 divisors (see below), whose sum is σ = 164502000. Its totient is φ = 29084832.

The previous prime is 71642303. The next prime is 71642327. The reversal of 71642312 is 21324617.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2639 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (3427125).

Almost surely, 2^71642312 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 71642312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82251000).

71642312 is an abundant number, since it is smaller than the sum of its proper divisors (92859688).

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

71642312 is a wasteful number, since it uses less digits than its factorization.

71642312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9658 (or 9647 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 71642312 is about 8464.1781644765. The cubic root of 71642312 is about 415.3267122905.

Adding to 71642312 its reverse (21324617), we get a palindrome (92966929).

The spelling of 71642312 in words is "seventy-one million, six hundred forty-two thousand, three hundred twelve".