1906228 has 12 divisors (see below), whose sum is σ = 3451140. Its totient is φ = 920192.

The previous prime is 1906211. The next prime is 1906237. The reversal of 1906228 is 8226091.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1567504 + 338724 = 1252^2 + 582^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1906196 and 1906205.

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, 8101 + ... + 8332.

It is an arithmetic number, because the mean of its divisors is an integer number (287595).

2^1906228 is an apocalyptic number.

It is an amenable number.

1906228 is a deficient number, since it is larger than the sum of its proper divisors (1544912).

1906228 is a wasteful number, since it uses less digits than its factorization.

1906228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16466 (or 16464 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1906228 is about 1380.6621599798. The cubic root of 1906228 is about 123.9914145981.

The spelling of 1906228 in words is "one million, nine hundred six thousand, two hundred twenty-eight".