228729684 has 12 divisors (see below), whose sum is σ = 533702624. Its totient is φ = 76243224.

The previous prime is 228729649. The next prime is 228729707. The reversal of 228729684 is 486927822.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9530392 + ... + 9530415.

Almost surely, 2^228729684 is an apocalyptic number.

It is an amenable number.

228729684 is an abundant number, since it is smaller than the sum of its proper divisors (304972940).

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

228729684 is a wasteful number, since it uses less digits than its factorization.

228729684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19060814 (or 19060812 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 228729684 is about 15123.8118210985. The cubic root of 228729684 is about 611.5624943512.

The spelling of 228729684 in words is "two hundred twenty-eight million, seven hundred twenty-nine thousand, six hundred eighty-four".