113247640 has 32 divisors (see below), whose sum is σ = 277972560. Its totient is φ = 41180800.

The previous prime is 113247611. The next prime is 113247643. The reversal of 113247640 is 46742311.

It is a junction number, because it is equal to n+sod(n) for n = 113247599 and 113247608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113247643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128251 + ... + 129130.

Almost surely, 2^113247640 is an apocalyptic number.

113247640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113247640 is an abundant number, since it is smaller than the sum of its proper divisors (164724920).

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

113247640 is a wasteful number, since it uses less digits than its factorization.

113247640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257403 (or 257399 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 113247640 is about 10641.7874438461. The cubic root of 113247640 is about 483.8117224113.

Adding to 113247640 its reverse (46742311), we get a palindrome (159989951).

The spelling of 113247640 in words is "one hundred thirteen million, two hundred forty-seven thousand, six hundred forty".