71859912 has 96 divisors (see below), whose sum is σ = 196862400. Its totient is φ = 21791616.

The previous prime is 71859899. The next prime is 71859913. The reversal of 71859912 is 21995817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71859913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1072503 + ... + 1072569.

It is an arithmetic number, because the mean of its divisors is an integer number (2050650).

Almost surely, 2^71859912 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 71859912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98431200).

71859912 is an abundant number, since it is smaller than the sum of its proper divisors (125002488).

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

71859912 is a wasteful number, since it uses less digits than its factorization.

71859912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 124 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 71859912 is about 8477.0225905090. The cubic root of 71859912 is about 415.7467794503.

It can be divided in two parts, 71859 and 912, that added together give a triangular number (72771 = T₃₈₁).

The spelling of 71859912 in words is "seventy-one million, eight hundred fifty-nine thousand, nine hundred twelve".