228513975 has 24 divisors (see below), whose sum is σ = 379237632. Its totient is φ = 121413600.

The previous prime is 228513959. The next prime is 228513979. The reversal of 228513975 is 579315822.

It is a happy number.

It is not a de Polignac number, because 228513975 - 2⁴ = 228513959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228513979) 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, 14704 + ... + 25946.

It is an arithmetic number, because the mean of its divisors is an integer number (15801568).

Almost surely, 2^228513975 is an apocalyptic number.

228513975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228513975 is a deficient number, since it is larger than the sum of its proper divisors (150723657).

228513975 is a wasteful number, since it uses less digits than its factorization.

228513975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11527 (or 11522 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 228513975 is about 15116.6787026780. The cubic root of 228513975 is about 611.3701843378.

The spelling of 228513975 in words is "two hundred twenty-eight million, five hundred thirteen thousand, nine hundred seventy-five".