11421885 has 8 divisors (see below), whose sum is σ = 18275040. Its totient is φ = 6091664.

The previous prime is 11421877. The next prime is 11421887. The reversal of 11421885 is 58812411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11421885 - 2³ = 11421877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421887) 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, 380715 + ... + 380744.

It is an arithmetic number, because the mean of its divisors is an integer number (2284380).

Almost surely, 2^11421885 is an apocalyptic number.

11421885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11421885 is a deficient number, since it is larger than the sum of its proper divisors (6853155).

11421885 is an equidigital number, since it uses as much as digits as its factorization.

11421885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761467.

The product of its digits is 2560, while the sum is 30.

The square root of 11421885 is about 3379.6279381021. The cubic root of 11421885 is about 225.2056391590.

The spelling of 11421885 in words is "eleven million, four hundred twenty-one thousand, eight hundred eighty-five".