20714940 has 120 divisors (see below), whose sum is σ = 68505360. Its totient is φ = 5225472.

The previous prime is 20714933. The next prime is 20714951. The reversal of 20714940 is 4941702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 39 ways as a sum of consecutive naturals, for example, 30444 + ... + 31116.

It is an arithmetic number, because the mean of its divisors is an integer number (570878).

Almost surely, 2^20714940 is an apocalyptic number.

20714940 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 20714940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34252680).

20714940 is an abundant number, since it is smaller than the sum of its proper divisors (47790420).

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

20714940 is a wasteful number, since it uses less digits than its factorization.

20714940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 702 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20714940 is about 4551.3668276684. The cubic root of 20714940 is about 274.6383786757.

The spelling of 20714940 in words is "twenty million, seven hundred fourteen thousand, nine hundred forty".