11423840 has 24 divisors (see below), whose sum is σ = 26989200. Its totient is φ = 4569472.

The previous prime is 11423837. The next prime is 11423849. The reversal of 11423840 is 4832411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35540 + ... + 35859.

It is an arithmetic number, because the mean of its divisors is an integer number (1124550).

Almost surely, 2^11423840 is an apocalyptic number.

11423840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11423840 is an abundant number, since it is smaller than the sum of its proper divisors (15565360).

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

11423840 is an equidigital number, since it uses as much as digits as its factorization.

11423840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71414 (or 71406 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 11423840 is about 3379.9171587481. The cubic root of 11423840 is about 225.2184873566.

The spelling of 11423840 in words is "eleven million, four hundred twenty-three thousand, eight hundred forty".