228464293 has 4 divisors (see below), whose sum is σ = 228497580. Its totient is φ = 228431008.

The previous prime is 228464263. The next prime is 228464317. The reversal of 228464293 is 392464822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91527489 + 136936804 = 9567^2 + 11702^2 .

It is a cyclic number.

It is not a de Polignac number, because 228464293 - 2⁵ = 228464261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228464263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128 + ... + 21481.

It is an arithmetic number, because the mean of its divisors is an integer number (57124395).

Almost surely, 2^228464293 is an apocalyptic number.

It is an amenable number.

228464293 is a deficient number, since it is larger than the sum of its proper divisors (33287).

228464293 is an equidigital number, since it uses as much as digits as its factorization.

228464293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33286.

The product of its digits is 165888, while the sum is 40.

The square root of 228464293 is about 15115.0353291019. The cubic root of 228464293 is about 611.3258744365.

The spelling of 228464293 in words is "two hundred twenty-eight million, four hundred sixty-four thousand, two hundred ninety-three".