113405040 has 120 divisors (see below), whose sum is σ = 435278688. Its totient is φ = 25920000.

The previous prime is 113405029. The next prime is 113405041. The reversal of 113405040 is 40504311.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113405041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6211 + ... + 16290.

Almost surely, 2^113405040 is an apocalyptic number.

113405040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113405040 is an abundant number, since it is smaller than the sum of its proper divisors (321873648).

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

113405040 is a wasteful number, since it uses less digits than its factorization.

113405040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22527 (or 22518 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 113405040 is about 10649.1802501413. The cubic root of 113405040 is about 484.0357644951.

Adding to 113405040 its reverse (40504311), we get a palindrome (153909351).

It can be divided in two parts, 11340 and 5040, that multiplied together give a square (57153600 = 7560²).

The spelling of 113405040 in words is "one hundred thirteen million, four hundred five thousand, forty".