228521259 has 36 divisors (see below), whose sum is σ = 354464656. Its totient is φ = 141827328.

The previous prime is 228521231. The next prime is 228521263. The reversal of 228521259 is 952125822.

It is a de Polignac number, because none of the positive numbers 2^k-228521259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228521269) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 267477 + ... + 268329.

Almost surely, 2^228521259 is an apocalyptic number.

228521259 is a deficient number, since it is larger than the sum of its proper divisors (125943397).

228521259 is a wasteful number, since it uses less digits than its factorization.

228521259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 976 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 228521259 is about 15116.9196266964. The cubic root of 228521259 is about 611.3766801813.

The spelling of 228521259 in words is "two hundred twenty-eight million, five hundred twenty-one thousand, two hundred fifty-nine".