113640780 has 96 divisors (see below), whose sum is σ = 350235648. Its totient is φ = 27529920.

The previous prime is 113640757. The next prime is 113640803. The reversal of 113640780 is 87046311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113640757) and next prime (113640803).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79149 + ... + 80571.

It is an arithmetic number, because the mean of its divisors is an integer number (3648288).

Almost surely, 2^113640780 is an apocalyptic number.

113640780 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 113640780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175117824).

113640780 is an abundant number, since it is smaller than the sum of its proper divisors (236594868).

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

113640780 is a wasteful number, since it uses less digits than its factorization.

113640780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 113640780 is about 10660.2429615839. The cubic root of 113640780 is about 484.3709277771.

The spelling of 113640780 in words is "one hundred thirteen million, six hundred forty thousand, seven hundred eighty".