1863228 has 12 divisors (see below), whose sum is σ = 4347560. Its totient is φ = 621072.

The previous prime is 1863223. The next prime is 1863229. The reversal of 1863228 is 8223681.

It is a tau number, because it is divible by the number of its divisors (12).

It is a d-powerful number, because it can be written as 1 + 8² + 6⁸ + 3¹¹ + 2⁸ + 2¹¹ + 8⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 1863195 and 1863204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1863223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77623 + ... + 77646.

2^1863228 is an apocalyptic number.

It is an amenable number.

1863228 is an abundant number, since it is smaller than the sum of its proper divisors (2484332).

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

1863228 is a wasteful number, since it uses less digits than its factorization.

1863228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155276 (or 155274 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1863228 is about 1365.0010989007. The cubic root of 1863228 is about 123.0519973161.

The spelling of 1863228 in words is "one million, eight hundred sixty-three thousand, two hundred twenty-eight".