113443640 has 32 divisors (see below), whose sum is σ = 255836880. Its totient is φ = 45272832.

The previous prime is 113443609. The next prime is 113443651. The reversal of 113443640 is 46344311.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 15644 + ... + 21716.

Almost surely, 2^113443640 is an apocalyptic number.

113443640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113443640 is an abundant number, since it is smaller than the sum of its proper divisors (142393240).

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

113443640 is a wasteful number, since it uses less digits than its factorization.

113443640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551 (or 6547 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 113443640 is about 10650.9924420215. The cubic root of 113443640 is about 484.0906758144.

Adding to 113443640 its reverse (46344311), we get a palindrome (159787951).

The spelling of 113443640 in words is "one hundred thirteen million, four hundred forty-three thousand, six hundred forty".