2129228 has 6 divisors (see below), whose sum is σ = 3726156. Its totient is φ = 1064612.

The previous prime is 2129227. The next prime is 2129261. The reversal of 2129228 is 8229212.

It is a super-2 number, since 2×2129228² = 9067223751968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2129197 and 2129206.

It is not an unprimeable number, because it can be changed into a prime (2129221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266150 + ... + 266157.

It is an arithmetic number, because the mean of its divisors is an integer number (621026).

2^2129228 is an apocalyptic number.

It is an amenable number.

2129228 is a deficient number, since it is larger than the sum of its proper divisors (1596928).

2129228 is a wasteful number, since it uses less digits than its factorization.

2129228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532311 (or 532309 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 2129228 is about 1459.1874451214. The cubic root of 2129228 is about 128.6492887600.

The spelling of 2129228 in words is "two million, one hundred twenty-nine thousand, two hundred twenty-eight".