109912656 has 80 divisors (see below), whose sum is σ = 325745024. Its totient is φ = 31283712.

The previous prime is 109912631. The next prime is 109912703. The reversal of 109912656 is 656219901.

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, 124890 + ... + 125766.

Almost surely, 2^109912656 is an apocalyptic number.

109912656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109912656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162872512).

109912656 is an abundant number, since it is smaller than the sum of its proper divisors (215832368).

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

109912656 is a wasteful number, since it uses less digits than its factorization.

109912656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 109912656 is about 10483.9236929692. The cubic root of 109912656 is about 479.0151334052.

The spelling of 109912656 in words is "one hundred nine million, nine hundred twelve thousand, six hundred fifty-six".