1822272 has 28 divisors (see below), whose sum is σ = 4821936. Its totient is φ = 607360.

The previous prime is 1822259. The next prime is 1822277. The reversal of 1822272 is 2722281.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1822277) 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, 4554 + ... + 4937.

It is an arithmetic number, because the mean of its divisors is an integer number (172212).

2^1822272 is an apocalyptic number.

1822272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1822272 is an abundant number, since it is smaller than the sum of its proper divisors (2999664).

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

1822272 is an equidigital number, since it uses as much as digits as its factorization.

1822272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9506 (or 9496 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 1822272 is about 1349.9155529143. The cubic root of 1822272 is about 122.1436988124.

Subtracting 1822272 from its reverse (2722281), we obtain a palindrome (900009).

The spelling of 1822272 in words is "one million, eight hundred twenty-two thousand, two hundred seventy-two".