1902220 has 12 divisors (see below), whose sum is σ = 3994704. Its totient is φ = 760880.

The previous prime is 1902217. The next prime is 1902221. The reversal of 1902220 is 222091.

It is a happy number.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 1902194 and 1902203.

It is not an unprimeable number, because it can be changed into a prime (1902221) 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, 47536 + ... + 47575.

It is an arithmetic number, because the mean of its divisors is an integer number (332892).

2^1902220 is an apocalyptic number.

1902220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1902220 is an abundant number, since it is smaller than the sum of its proper divisors (2092484).

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

1902220 is a wasteful number, since it uses less digits than its factorization.

1902220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95120 (or 95118 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1902220 is about 1379.2099187578. The cubic root of 1902220 is about 123.9044529308.

The spelling of 1902220 in words is "one million, nine hundred two thousand, two hundred twenty".