215113104 has 120 divisors (see below), whose sum is σ = 656292320. Its totient is φ = 67447296.

The previous prime is 215113103. The next prime is 215113127. The reversal of 215113104 is 401311512.

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

It is not an unprimeable number, because it can be changed into a prime (215113103) 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 23 ways as a sum of consecutive naturals, for example, 123987 + ... + 125709.

Almost surely, 2^215113104 is an apocalyptic number.

215113104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215113104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328146160).

215113104 is an abundant number, since it is smaller than the sum of its proper divisors (441179216).

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

215113104 is a wasteful number, since it uses less digits than its factorization.

215113104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1745 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 215113104 is about 14666.7346059033. The cubic root of 215113104 is about 599.1776734800.

Adding to 215113104 its reverse (401311512), we get a palindrome (616424616).

The spelling of 215113104 in words is "two hundred fifteen million, one hundred thirteen thousand, one hundred four".