228790457 has 12 divisors (see below), whose sum is σ = 280152720. Its totient is φ = 185783976.

The previous prime is 228790439. The next prime is 228790459. The reversal of 228790457 is 754097822.

It is not a de Polignac number, because 228790457 - 2⁸ = 228790201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228790459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121943 + ... + 123804.

It is an arithmetic number, because the mean of its divisors is an integer number (23346060).

Almost surely, 2^228790457 is an apocalyptic number.

It is an amenable number.

228790457 is a deficient number, since it is larger than the sum of its proper divisors (51362263).

228790457 is a wasteful number, since it uses less digits than its factorization.

228790457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245780 (or 245773 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 228790457 is about 15125.8208702867. The cubic root of 228790457 is about 611.6166531812.

The spelling of 228790457 in words is "two hundred twenty-eight million, seven hundred ninety thousand, four hundred fifty-seven".