20053940 has 24 divisors (see below), whose sum is σ = 42511392. Its totient is φ = 7945760.

The previous prime is 20053937. The next prime is 20053951. The reversal of 20053940 is 4935002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2546 + ... + 6825.

It is an arithmetic number, because the mean of its divisors is an integer number (1771308).

Almost surely, 2^20053940 is an apocalyptic number.

20053940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20053940 is an abundant number, since it is smaller than the sum of its proper divisors (22457452).

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

20053940 is a wasteful number, since it uses less digits than its factorization.

20053940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9487 (or 9485 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 20053940 is about 4478.1625696261. The cubic root of 20053940 is about 271.6855687518.

Adding to 20053940 its reverse (4935002), we get a palindrome (24988942).

The spelling of 20053940 in words is "twenty million, fifty-three thousand, nine hundred forty".