228521245 has 16 divisors (see below), whose sum is σ = 276981120. Its totient is φ = 180990400.

The previous prime is 228521231. The next prime is 228521263. The reversal of 228521245 is 542125822.

It is not a de Polignac number, because 228521245 - 2¹³ = 228513053 is a prime.

It is a congruent number.

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, 277935 + ... + 278755.

It is an arithmetic number, because the mean of its divisors is an integer number (17311320).

Almost surely, 2^228521245 is an apocalyptic number.

It is an amenable number.

228521245 is a deficient number, since it is larger than the sum of its proper divisors (48459875).

228521245 is a wasteful number, since it uses less digits than its factorization.

228521245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316.

The product of its digits is 12800, while the sum is 31.

The square root of 228521245 is about 15116.9191636391. The cubic root of 228521245 is about 611.3766676963.

The spelling of 228521245 in words is "two hundred twenty-eight million, five hundred twenty-one thousand, two hundred forty-five".