113749640 has 64 divisors (see below), whose sum is σ = 262785600. Its totient is φ = 44299008.

The previous prime is 113749619. The next prime is 113749673. The reversal of 113749640 is 46947311.

It is a self number, because there is not a number n which added to its sum of digits gives 113749640.

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, 370367 + ... + 370673.

It is an arithmetic number, because the mean of its divisors is an integer number (4106025).

Almost surely, 2^113749640 is an apocalyptic number.

113749640 is a gapful number since it is divisible by the number (10) 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 113749640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131392800).

113749640 is an abundant number, since it is smaller than the sum of its proper divisors (149035960).

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

113749640 is a wasteful number, since it uses less digits than its factorization.

113749640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 113749640 is about 10665.3476267771. The cubic root of 113749640 is about 484.5255430228.

The spelling of 113749640 in words is "one hundred thirteen million, seven hundred forty-nine thousand, six hundred forty".