113985816 has 128 divisors (see below), whose sum is σ = 348986880. Its totient is φ = 30283776.

The previous prime is 113985797. The next prime is 113985821. The reversal of 113985816 is 618589311.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305406 + ... + 305778.

It is an arithmetic number, because the mean of its divisors is an integer number (2726460).

Almost surely, 2^113985816 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 113985816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174493440).

113985816 is an abundant number, since it is smaller than the sum of its proper divisors (235001064).

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

113985816 is a wasteful number, since it uses less digits than its factorization.

113985816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 509 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 113985816 is about 10676.4140047115. The cubic root of 113985816 is about 484.8606479584.

The spelling of 113985816 in words is "one hundred thirteen million, nine hundred eighty-five thousand, eight hundred sixteen".