1995228 has 36 divisors (see below), whose sum is σ = 5310760. Its totient is φ = 629856.

The previous prime is 1995223. The next prime is 1995263. The reversal of 1995228 is 8225991.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1995192 and 1995201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 775 + ... + 2142.

2^1995228 is an apocalyptic number.

1995228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1995228 is an abundant number, since it is smaller than the sum of its proper divisors (3315532).

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

1995228 is a wasteful number, since it uses less digits than its factorization.

1995228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946 (or 2941 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1995228 is about 1412.5253980017. The cubic root of 1995228 is about 125.8918194659.

The spelling of 1995228 in words is "one million, nine hundred ninety-five thousand, two hundred twenty-eight".