215342460 has 36 divisors (see below), whose sum is σ = 653206008. Its totient is φ = 57424608.

The previous prime is 215342437. The next prime is 215342467. The reversal of 215342460 is 64243512.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215342467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 597994 + ... + 598353.

Almost surely, 2^215342460 is an apocalyptic number.

215342460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215342460 is an abundant number, since it is smaller than the sum of its proper divisors (437863548).

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

215342460 is a wasteful number, since it uses less digits than its factorization.

215342460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196362 (or 1196357 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 215342460 is about 14674.5514411855. The cubic root of 215342460 is about 599.3905478230.

Adding to 215342460 its reverse (64243512), we get a palindrome (279585972).

The spelling of 215342460 in words is "two hundred fifteen million, three hundred forty-two thousand, four hundred sixty".