215113452 has 12 divisors (see below), whose sum is σ = 501931416. Its totient is φ = 71704480.

The previous prime is 215113441. The next prime is 215113453. The reversal of 215113452 is 254311512.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (215113453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8963049 + ... + 8963072.

It is an arithmetic number, because the mean of its divisors is an integer number (41827618).

Almost surely, 2^215113452 is an apocalyptic number.

It is an amenable number.

215113452 is an abundant number, since it is smaller than the sum of its proper divisors (286817964).

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

215113452 is a wasteful number, since it uses less digits than its factorization.

215113452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17926128 (or 17926126 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 215113452 is about 14666.7464694799. The cubic root of 215113452 is about 599.1779965871.

Adding to 215113452 its reverse (254311512), we get a palindrome (469424964).

The spelling of 215113452 in words is "two hundred fifteen million, one hundred thirteen thousand, four hundred fifty-two".