20414940 has 96 divisors (see below), whose sum is σ = 70371840. Its totient is φ = 4306176.

The previous prime is 20414939. The next prime is 20414951. The reversal of 20414940 is 4941402.

It is a self number, because there is not a number n which added to its sum of digits gives 20414940.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3591 + ... + 7329.

It is an arithmetic number, because the mean of its divisors is an integer number (733040).

Almost surely, 2^20414940 is an apocalyptic number.

20414940 is a gapful number since it is divisible by the number (20) 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 20414940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35185920).

20414940 is an abundant number, since it is smaller than the sum of its proper divisors (49956900).

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

20414940 is a wasteful number, since it uses less digits than its factorization.

20414940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20414940 is about 4518.2894993570. The cubic root of 20414940 is about 273.3061279024.

The spelling of 20414940 in words is "twenty million, four hundred fourteen thousand, nine hundred forty".