228747087 has 24 divisors (see below), whose sum is σ = 354083184. Its totient is φ = 141790464.

The previous prime is 228747083. The next prime is 228747097. The reversal of 228747087 is 780747822.

228747087 is a `hidden beast` number, since 22 + 87 + 470 + 87 = 666.

It is not a de Polignac number, because 228747087 - 2² = 228747083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228747083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3693 + ... + 21705.

It is an arithmetic number, because the mean of its divisors is an integer number (14753466).

Almost surely, 2^228747087 is an apocalyptic number.

228747087 is a deficient number, since it is larger than the sum of its proper divisors (125336097).

228747087 is a wasteful number, since it uses less digits than its factorization.

228747087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119 (or 18116 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 228747087 is about 15124.3871611381. The cubic root of 228747087 is about 611.5780042928.

The spelling of 228747087 in words is "two hundred twenty-eight million, seven hundred forty-seven thousand, eighty-seven".