228142858 has 4 divisors (see below), whose sum is σ = 342214290. Its totient is φ = 114071428.

The previous prime is 228142843. The next prime is 228142897. The reversal of 228142858 is 858241822.

228142858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858241822 = 2 ⋅429120911.

It can be written as a sum of positive squares in only one way, i.e., 202407529 + 25735329 = 14227^2 + 5073^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228142858.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57035713 + ... + 57035716.

Almost surely, 2^228142858 is an apocalyptic number.

228142858 is a deficient number, since it is larger than the sum of its proper divisors (114071432).

228142858 is a wasteful number, since it uses less digits than its factorization.

228142858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114071431.

The product of its digits is 81920, while the sum is 40.

The square root of 228142858 is about 15104.3986308625. The cubic root of 228142858 is about 611.0390407595.

The spelling of 228142858 in words is "two hundred twenty-eight million, one hundred forty-two thousand, eight hundred fifty-eight".