11623840 has 24 divisors (see below), whose sum is σ = 27461700. Its totient is φ = 4649472.

The previous prime is 11623837. The next prime is 11623861. The reversal of 11623840 is 4832611.

It can be written as a sum of positive squares in 2 ways, for example, as 11209104 + 414736 = 3348^2 + 644^2 .

It is a super-2 number, since 2×11623840² = 270227312691200, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 36165 + ... + 36484.

Almost surely, 2^11623840 is an apocalyptic number.

11623840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11623840 is an abundant number, since it is smaller than the sum of its proper divisors (15837860).

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

11623840 is an equidigital number, since it uses as much as digits as its factorization.

11623840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72664 (or 72656 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 11623840 is about 3409.3753093492. The cubic root of 11623840 is about 226.5252097010.

The spelling of 11623840 in words is "eleven million, six hundred twenty-three thousand, eight hundred forty".