228911001 has 16 divisors (see below), whose sum is σ = 352548288. Its totient is φ = 130572800.

The previous prime is 228910999. The next prime is 228911021. The reversal of 228911001 is 100119822.

It is a cyclic number.

It is not a de Polignac number, because 228911001 - 2¹ = 228910999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228911021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203460 + ... + 204581.

It is an arithmetic number, because the mean of its divisors is an integer number (22034268).

Almost surely, 2^228911001 is an apocalyptic number.

It is an amenable number.

228911001 is a deficient number, since it is larger than the sum of its proper divisors (123637287).

228911001 is a wasteful number, since it uses less digits than its factorization.

228911001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408072.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 228911001 is about 15129.8050549239. The cubic root of 228911001 is about 611.7240495216.

The spelling of 228911001 in words is "two hundred twenty-eight million, nine hundred eleven thousand, one".