228143994 has 16 divisors (see below), whose sum is σ = 491387232. Its totient is φ = 70198128.

The previous prime is 228143989. The next prime is 228144013. The reversal of 228143994 is 499341822.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462384 + ... + 1462539.

It is an arithmetic number, because the mean of its divisors is an integer number (30711702).

Almost surely, 2^228143994 is an apocalyptic number.

228143994 is an abundant number, since it is smaller than the sum of its proper divisors (263243238).

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

228143994 is a wasteful number, since it uses less digits than its factorization.

228143994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924941.

The product of its digits is 124416, while the sum is 42.

The square root of 228143994 is about 15104.4362357554. The cubic root of 228143994 is about 611.0400549474.

The spelling of 228143994 in words is "two hundred twenty-eight million, one hundred forty-three thousand, nine hundred ninety-four".