1822872 has 32 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 602400.

The previous prime is 1822871. The next prime is 1822903. The reversal of 1822872 is 2782281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3373 + ... + 3875.

It is an arithmetic number, because the mean of its divisors is an integer number (143640).

2^1822872 is an apocalyptic number.

1822872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1822872 is an abundant number, since it is smaller than the sum of its proper divisors (2773608).

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

1822872 is a wasteful number, since it uses less digits than its factorization.

1822872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663 (or 659 counting only the distinct ones).

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

The square root of 1822872 is about 1350.1377707479. The cubic root of 1822872 is about 122.1571029909.

The spelling of 1822872 in words is "one million, eight hundred twenty-two thousand, eight hundred seventy-two".