228307555 has 16 divisors (see below), whose sum is σ = 314251200. Its totient is φ = 155981952.

The previous prime is 228307549. The next prime is 228307561. The reversal of 228307555 is 555703822.

It is an interprime number because it is at equal distance from previous prime (228307549) and next prime (228307561).

It is not a de Polignac number, because 228307555 - 2⁵ = 228307523 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2080 + ... + 21469.

It is an arithmetic number, because the mean of its divisors is an integer number (19640700).

Almost surely, 2^228307555 is an apocalyptic number.

228307555 is a deficient number, since it is larger than the sum of its proper divisors (85943645).

228307555 is a wasteful number, since it uses less digits than its factorization.

228307555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23838.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 228307555 is about 15109.8496021635. The cubic root of 228307555 is about 611.1860423516.

The spelling of 228307555 in words is "two hundred twenty-eight million, three hundred seven thousand, five hundred fifty-five".