113621504 has 40 divisors (see below), whose sum is σ = 228067620. Its totient is φ = 56549376.

The previous prime is 113621477. The next prime is 113621509. The reversal of 113621504 is 405126311.

It can be written as a sum of positive squares in 2 ways, for example, as 81721600 + 31899904 = 9040^2 + 5648^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 113621504.

It is not an unprimeable number, because it can be changed into a prime (113621509) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 159902 + ... + 160610.

Almost surely, 2^113621504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113621504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114033810).

113621504 is an abundant number, since it is smaller than the sum of its proper divisors (114446116).

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

113621504 is an frugal number, since it uses more digits than its factorization.

113621504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 113621504 is about 10659.3388162681. The cubic root of 113621504 is about 484.3435395397.

Adding to 113621504 its reverse (405126311), we get a palindrome (518747815).

The spelling of 113621504 in words is "one hundred thirteen million, six hundred twenty-one thousand, five hundred four".