215285230 has 16 divisors (see below), whose sum is σ = 390082464. Its totient is φ = 85543200.

The previous prime is 215285209. The next prime is 215285281. The reversal of 215285230 is 32582512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69777 + ... + 72796.

It is an arithmetic number, because the mean of its divisors is an integer number (24380154).

Almost surely, 2^215285230 is an apocalyptic number.

215285230 is a deficient number, since it is larger than the sum of its proper divisors (174797234).

215285230 is a wasteful number, since it uses less digits than its factorization.

215285230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142731.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 215285230 is about 14672.6013371863. The cubic root of 215285230 is about 599.3374445624.

The spelling of 215285230 in words is "two hundred fifteen million, two hundred eighty-five thousand, two hundred thirty".