115213404 has 48 divisors (see below), whose sum is σ = 282078720. Its totient is φ = 36550080.

The previous prime is 115213387. The next prime is 115213409. The reversal of 115213404 is 404312511.

It is a super-2 number, since 2×115213404² = 26548256922534432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115213409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22377 + ... + 27039.

It is an arithmetic number, because the mean of its divisors is an integer number (5876640).

Almost surely, 2^115213404 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 115213404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141039360).

115213404 is an abundant number, since it is smaller than the sum of its proper divisors (166865316).

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

115213404 is a wasteful number, since it uses less digits than its factorization.

115213404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770 (or 4768 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 115213404 is about 10733.7506958192. The cubic root of 115213404 is about 486.5950306352.

Adding to 115213404 its reverse (404312511), we get a palindrome (519525915).

The spelling of 115213404 in words is "one hundred fifteen million, two hundred thirteen thousand, four hundred four".