215655230 has 16 divisors (see below), whose sum is σ = 443633760. Its totient is φ = 73938912.

The previous prime is 215655229. The next prime is 215655233. The reversal of 215655230 is 32556512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 215655193 and 215655202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215655233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540325 + ... + 1540464.

It is an arithmetic number, because the mean of its divisors is an integer number (27727110).

Almost surely, 2^215655230 is an apocalyptic number.

215655230 is an abundant number, since it is smaller than the sum of its proper divisors (227978530).

215655230 is a wasteful number, since it uses less digits than its factorization.

215655230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080803.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 215655230 is about 14685.2044589103. The cubic root of 215655230 is about 599.6805985198.

The spelling of 215655230 in words is "two hundred fifteen million, six hundred fifty-five thousand, two hundred thirty".