11921504 has 36 divisors (see below), whose sum is σ = 27305964. Its totient is φ = 5108544.

The previous prime is 11921501. The next prime is 11921519. The reversal of 11921504 is 40512911.

It is a happy number.

It is a super-4 number, since 4×11921504⁴ (a number of 29 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11921504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2234 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (758499).

Almost surely, 2^11921504 is an apocalyptic number.

11921504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11921504 is an abundant number, since it is smaller than the sum of its proper divisors (15384460).

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

11921504 is an equidigital number, since it uses as much as digits as its factorization.

11921504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627 (or 7612 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 11921504 is about 3452.7531044081. The cubic root of 11921504 is about 228.4425589039.

The spelling of 11921504 in words is "eleven million, nine hundred twenty-one thousand, five hundred four".