1322864 has 20 divisors (see below), whose sum is σ = 2652360. Its totient is φ = 638400.

The previous prime is 1322857. The next prime is 1322869. The reversal of 1322864 is 4682231.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 962 + ... + 1889.

It is an arithmetic number, because the mean of its divisors is an integer number (132618).

2^1322864 is an apocalyptic number.

It is an amenable number.

1322864 is an abundant number, since it is smaller than the sum of its proper divisors (1329496).

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

1322864 is a wasteful number, since it uses less digits than its factorization.

1322864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888 (or 2882 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 1322864 is about 1150.1582499813. The cubic root of 1322864 is about 109.7754095272.

The spelling of 1322864 in words is "one million, three hundred twenty-two thousand, eight hundred sixty-four".