71776012 has 48 divisors (see below), whose sum is σ = 157264128. Its totient is φ = 27846720.

The previous prime is 71775973. The next prime is 71776021. The reversal of 71776012 is 21067717.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121983 + ... + 122569.

It is an arithmetic number, because the mean of its divisors is an integer number (3276336).

Almost surely, 2^71776012 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 71776012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78632064).

71776012 is an abundant number, since it is smaller than the sum of its proper divisors (85488116).

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

71776012 is a wasteful number, since it uses less digits than its factorization.

71776012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 71776012 is about 8472.0724737221. The cubic root of 71776012 is about 415.5849147992.

It can be divided in two parts, 717 and 76012, that added together give a square (76729 = 277²).

The spelling of 71776012 in words is "seventy-one million, seven hundred seventy-six thousand, twelve".