1872822 has 64 divisors (see below), whose sum is σ = 4713984. Its totient is φ = 483840.

The previous prime is 1872817. The next prime is 1872841. The reversal of 1872822 is 2282781.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1872822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30672 + ... + 30732.

It is an arithmetic number, because the mean of its divisors is an integer number (73656).

2^1872822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1872822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356992).

1872822 is an abundant number, since it is smaller than the sum of its proper divisors (2841162).

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

1872822 is a wasteful number, since it uses less digits than its factorization.

1872822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133.

The product of its digits is 3584, while the sum is 30.

The square root of 1872822 is about 1368.5108695221. The cubic root of 1872822 is about 123.2628393516.

The spelling of 1872822 in words is "one million, eight hundred seventy-two thousand, eight hundred twenty-two".