11994520 has 64 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 4362240.

The previous prime is 11994517. The next prime is 11994539. The reversal of 11994520 is 2549911.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20796 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (461700).

Almost surely, 2^11994520 is an apocalyptic number.

11994520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11994520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14774400).

11994520 is an abundant number, since it is smaller than the sum of its proper divisors (17554280).

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

11994520 is a wasteful number, since it uses less digits than its factorization.

11994520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 11994520 is about 3463.3105549459. The cubic root of 11994520 is about 228.9079930152.

The spelling of 11994520 in words is "eleven million, nine hundred ninety-four thousand, five hundred twenty".