228518994 has 32 divisors (see below), whose sum is σ = 510753600. Its totient is φ = 67558400.

The previous prime is 228518971. The next prime is 228519001. The reversal of 228518994 is 499815822.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39519 + ... + 44930.

It is an arithmetic number, because the mean of its divisors is an integer number (15961050).

Almost surely, 2^228518994 is an apocalyptic number.

228518994 is an abundant number, since it is smaller than the sum of its proper divisors (282234606).

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

228518994 is a wasteful number, since it uses less digits than its factorization.

228518994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84506.

The product of its digits is 414720, while the sum is 48.

The square root of 228518994 is about 15116.8447104546. The cubic root of 228518994 is about 611.3746602777.

The spelling of 228518994 in words is "two hundred twenty-eight million, five hundred eighteen thousand, nine hundred ninety-four".