228621558 has 32 divisors (see below), whose sum is σ = 516015360. Its totient is φ = 66889760.

The previous prime is 228621553. The next prime is 228621571. The reversal of 228621558 is 855126822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228621553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57810 + ... + 61637.

It is an arithmetic number, because the mean of its divisors is an integer number (16125480).

Almost surely, 2^228621558 is an apocalyptic number.

228621558 is an abundant number, since it is smaller than the sum of its proper divisors (287393802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228621558 is a wasteful number, since it uses less digits than its factorization.

228621558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119492.

The product of its digits is 76800, while the sum is 39.

The square root of 228621558 is about 15120.2367044964. The cubic root of 228621558 is about 611.4661124160.

The spelling of 228621558 in words is "two hundred twenty-eight million, six hundred twenty-one thousand, five hundred fifty-eight".