228204636 has 24 divisors (see below), whose sum is σ = 580884864. Its totient is φ = 69152880.

The previous prime is 228204623. The next prime is 228204659. The reversal of 228204636 is 636402822.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 228204597 and 228204606.

It is a congruent number.

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, 864280 + ... + 864543.

It is an arithmetic number, because the mean of its divisors is an integer number (24203536).

Almost surely, 2^228204636 is an apocalyptic number.

It is an amenable number.

228204636 is an abundant number, since it is smaller than the sum of its proper divisors (352680228).

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

228204636 is a wasteful number, since it uses less digits than its factorization.

228204636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728841 (or 1728839 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 228204636 is about 15106.4435258601. The cubic root of 228204636 is about 611.0941894843.

The spelling of 228204636 in words is "two hundred twenty-eight million, two hundred four thousand, six hundred thirty-six".