83211712 has 28 divisors (see below), whose sum is σ = 167929560. Its totient is φ = 40898816.

The previous prime is 83211691. The next prime is 83211763. The reversal of 83211712 is 21711238.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7243 + ... + 14794.

Almost surely, 2^83211712 is an apocalyptic number.

It is an amenable number.

83211712 is an abundant number, since it is smaller than the sum of its proper divisors (84717848).

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

83211712 is a wasteful number, since it uses less digits than its factorization.

83211712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22108 (or 22098 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 83211712 is about 9122.0453846711. The cubic root of 83211712 is about 436.5776368682.

It can be divided in two parts, 832 and 11712, that added together give a square (12544 = 112²).

The spelling of 83211712 in words is "eighty-three million, two hundred eleven thousand, seven hundred twelve".