11447664 has 40 divisors (see below), whose sum is σ = 31314960. Its totient is φ = 3591168.

The previous prime is 11447627. The next prime is 11447669. The reversal of 11447664 is 46674411.

11447664 = T₁₁₅₂ + T₁₁₅₃ + ... + T₁₁₆₈.

It is a super-2 number, since 2×11447664² = 262098022113792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11447669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6199 + ... + 7830.

It is an arithmetic number, because the mean of its divisors is an integer number (782874).

Almost surely, 2^11447664 is an apocalyptic number.

It is an amenable number.

11447664 is an abundant number, since it is smaller than the sum of its proper divisors (19867296).

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

11447664 is a wasteful number, since it uses less digits than its factorization.

11447664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14057 (or 14051 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 11447664 is about 3383.4396699217. The cubic root of 11447664 is about 225.3749402841.

The spelling of 11447664 in words is "eleven million, four hundred forty-seven thousand, six hundred sixty-four".