1163264 has 30 divisors (see below), whose sum is σ = 2359224. Its totient is φ = 573440.

The previous prime is 1163263. The next prime is 1163273. The reversal of 1163264 is 4623611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16349 + ... + 16419.

2^1163264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179612).

1163264 is an abundant number, since it is smaller than the sum of its proper divisors (1195960).

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

1163264 is an frugal number, since it uses more digits than its factorization.

1163264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 73 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 1163264 is about 1078.5471709666. The cubic root of 1163264 is about 105.1702152231.

Adding to 1163264 its reverse (4623611), we get a palindrome (5786875).

The spelling of 1163264 in words is "one million, one hundred sixty-three thousand, two hundred sixty-four".