228572236 has 12 divisors (see below), whose sum is σ = 410812528. Its totient is φ = 111197232.

The previous prime is 228572231. The next prime is 228572243. The reversal of 228572236 is 632275822.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 228572195 and 228572204.

It is not an unprimeable number, because it can be changed into a prime (228572231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772056 + ... + 772351.

Almost surely, 2^228572236 is an apocalyptic number.

It is an amenable number.

228572236 is a deficient number, since it is larger than the sum of its proper divisors (182240292).

228572236 is a wasteful number, since it uses less digits than its factorization.

228572236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544448 (or 1544446 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 228572236 is about 15118.6056235355. The cubic root of 228572236 is about 611.4221374136.

The spelling of 228572236 in words is "two hundred twenty-eight million, five hundred seventy-two thousand, two hundred thirty-six".