228878057 has 4 divisors (see below), whose sum is σ = 229904640. Its totient is φ = 227851476.

The previous prime is 228878033. The next prime is 228878071. The reversal of 228878057 is 750878822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228878057 - 2¹⁴ = 228861673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228878087) 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, 512957 + ... + 513402.

It is an arithmetic number, because the mean of its divisors is an integer number (57476160).

Almost surely, 2^228878057 is an apocalyptic number.

It is an amenable number.

228878057 is a deficient number, since it is larger than the sum of its proper divisors (1026583).

228878057 is a wasteful number, since it uses less digits than its factorization.

228878057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026582.

The product of its (nonzero) digits is 501760, while the sum is 47.

The square root of 228878057 is about 15128.7163037714. The cubic root of 228878057 is about 611.6947024481.

The spelling of 228878057 in words is "two hundred twenty-eight million, eight hundred seventy-eight thousand, fifty-seven".