228942293 has 2 divisors, whose sum is σ = 228942294. Its totient is φ = 228942292.

The previous prime is 228942251. The next prime is 228942317. The reversal of 228942293 is 392249822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132549169 + 96393124 = 11513^2 + 9818^2 .

It is a cyclic number.

It is not a de Polignac number, because 228942293 - 2¹⁰ = 228941269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228942293.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228942193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114471146 + 114471147.

It is an arithmetic number, because the mean of its divisors is an integer number (114471147).

Almost surely, 2^228942293 is an apocalyptic number.

It is an amenable number.

228942293 is a deficient number, since it is larger than the sum of its proper divisors (1).

228942293 is an equidigital number, since it uses as much as digits as its factorization.

228942293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 228942293 is about 15130.8391373380. The cubic root of 228942293 is about 611.7519223582.

The spelling of 228942293 in words is "two hundred twenty-eight million, nine hundred forty-two thousand, two hundred ninety-three".