20000228 has 24 divisors (see below), whose sum is σ = 37272312. Its totient is φ = 9357824.

The previous prime is 20000221. The next prime is 20000243. The reversal of 20000228 is 82200002.

It can be written as a sum of positive squares in 4 ways, for example, as 15429184 + 4571044 = 3928^2 + 2138^2 .

It is not an unprimeable number, because it can be changed into a prime (20000221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12650 + ... + 14142.

It is an arithmetic number, because the mean of its divisors is an integer number (1553013).

Almost surely, 2^20000228 is an apocalyptic number.

It is an amenable number.

20000228 is a deficient number, since it is larger than the sum of its proper divisors (17272084).

20000228 is a wasteful number, since it uses less digits than its factorization.

20000228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1709 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20000228 is about 4472.1614461019. The cubic root of 20000228 is about 271.4427931343.

The spelling of 20000228 in words is "twenty million, two hundred twenty-eight", and thus it is an aban number.