228890557 has 8 divisors (see below), whose sum is σ = 262918656. Its totient is φ = 195194832.

The previous prime is 228890537. The next prime is 228890561. The reversal of 228890557 is 755098822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228890557 - 2⁷ = 228890429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228890507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81613 + ... + 84370.

It is an arithmetic number, because the mean of its divisors is an integer number (32864832).

Almost surely, 2^228890557 is an apocalyptic number.

It is an amenable number.

228890557 is a deficient number, since it is larger than the sum of its proper divisors (34028099).

228890557 is a wasteful number, since it uses less digits than its factorization.

228890557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166187.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 228890557 is about 15129.1294197650. The cubic root of 228890557 is about 611.7058379915.

The spelling of 228890557 in words is "two hundred twenty-eight million, eight hundred ninety thousand, five hundred fifty-seven".