1322860 has 48 divisors (see below), whose sum is σ = 3467520. Its totient is φ = 411840.

The previous prime is 1322857. The next prime is 1322869. The reversal of 1322860 is 682231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1111 + ... + 1969.

It is an arithmetic number, because the mean of its divisors is an integer number (72240).

2^1322860 is an apocalyptic number.

1322860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1322860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733760).

1322860 is an abundant number, since it is smaller than the sum of its proper divisors (2144660).

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

1322860 is a wasteful number, since it uses less digits than its factorization.

1322860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1322860 is about 1150.1565110888. The cubic root of 1322860 is about 109.7752988829.

It can be divided in two parts, 132 and 2860, that added together give a palindrome (2992).

The spelling of 1322860 in words is "one million, three hundred twenty-two thousand, eight hundred sixty".