83281656 has 64 divisors (see below), whose sum is σ = 213801120. Its totient is φ = 27023360.

The previous prime is 83281637. The next prime is 83281663. The reversal of 83281656 is 65618238.

It is a happy number.

It is a super-2 number, since 2×83281656² = 13871668452204672, which contains 22 as substring.

Its product of digits (69120) is a multiple of the sum of its prime factors (576).

It is a congruent number.

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, 296236 + ... + 296516.

Almost surely, 2^83281656 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 83281656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106900560).

83281656 is an abundant number, since it is smaller than the sum of its proper divisors (130519464).

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

83281656 is a wasteful number, since it uses less digits than its factorization.

83281656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 572 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 83281656 is about 9125.8783686832. The cubic root of 83281656 is about 436.6999250805.

The spelling of 83281656 in words is "eighty-three million, two hundred eighty-one thousand, six hundred fifty-six".