215314432 has 26 divisors (see below), whose sum is σ = 430584488. Its totient is φ = 107655168.

The previous prime is 215314427. The next prime is 215314439. The reversal of 215314432 is 234413512.

It is a junction number, because it is equal to n+sod(n) for n = 215314397 and 215314406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215314439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22188 + ... + 30379.

Almost surely, 2^215314432 is an apocalyptic number.

It is an amenable number.

215314432 is a deficient number, since it is larger than the sum of its proper divisors (215270056).

215314432 is an frugal number, since it uses more digits than its factorization.

215314432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52591 (or 52569 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 215314432 is about 14673.5964235085. The cubic root of 215314432 is about 599.3645420410.

Adding to 215314432 its reverse (234413512), we get a palindrome (449727944).

The spelling of 215314432 in words is "two hundred fifteen million, three hundred fourteen thousand, four hundred thirty-two".