11821464 has 56 divisors (see below), whose sum is σ = 33249060. Its totient is φ = 3938544.

The previous prime is 11821451. The next prime is 11821483. The reversal of 11821464 is 46412811.

It is a happy number.

It is a super-2 number, since 2×11821464² = 279494022206592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 4819 + ... + 6845.

Almost surely, 2^11821464 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 11821464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16624530).

11821464 is an abundant number, since it is smaller than the sum of its proper divisors (21427596).

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

11821464 is an equidigital number, since it uses as much as digits as its factorization.

11821464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051 (or 2032 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 11821464 is about 3438.2355940220. The cubic root of 11821464 is about 227.8017667554.

The spelling of 11821464 in words is "eleven million, eight hundred twenty-one thousand, four hundred sixty-four".