11421940 has 48 divisors (see below), whose sum is σ = 25401600. Its totient is φ = 4307072.

The previous prime is 11421913. The next prime is 11421947. The reversal of 11421940 is 4912411.

11421940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27051 + ... + 27469.

It is an arithmetic number, because the mean of its divisors is an integer number (529200).

Almost surely, 2^11421940 is an apocalyptic number.

11421940 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 11421940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12700800).

11421940 is an abundant number, since it is smaller than the sum of its proper divisors (13979660).

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

11421940 is a wasteful number, since it uses less digits than its factorization.

11421940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 502 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11421940 is about 3379.6360750826. The cubic root of 11421940 is about 225.2060006372.

The spelling of 11421940 in words is "eleven million, four hundred twenty-one thousand, nine hundred forty".