1143264 has 24 divisors (see below), whose sum is σ = 3001320. Its totient is φ = 381056.

The previous prime is 1143257. The next prime is 1143269. The reversal of 1143264 is 4623411.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1143264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143269) 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, 5859 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (125055).

2^1143264 is an apocalyptic number.

It is an amenable number.

1143264 is an abundant number, since it is smaller than the sum of its proper divisors (1858056).

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

1143264 is a wasteful number, since it uses less digits than its factorization.

1143264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11922 (or 11914 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1143264 is about 1069.2352407211. The cubic root of 1143264 is about 104.5639970318.

Adding to 1143264 its reverse (4623411), we get a palindrome (5766675).

The spelling of 1143264 in words is "one million, one hundred forty-three thousand, two hundred sixty-four".