11421264 has 40 divisors (see below), whose sum is σ = 29645920. Its totient is φ = 3788928.

The previous prime is 11421257. The next prime is 11421269. The reversal of 11421264 is 46212411.

It is a happy number.

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 11421264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421269) 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, 12867 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (741148).

Almost surely, 2^11421264 is an apocalyptic number.

It is an amenable number.

11421264 is an abundant number, since it is smaller than the sum of its proper divisors (18224656).

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

11421264 is a wasteful number, since it uses less digits than its factorization.

11421264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1141 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 11421264 is about 3379.5360628347. The cubic root of 11421264 is about 225.2015576600.

Adding to 11421264 its reverse (46212411), we get a palindrome (57633675).

The spelling of 11421264 in words is "eleven million, four hundred twenty-one thousand, two hundred sixty-four".