20793408 has 56 divisors (see below), whose sum is σ = 56522112. Its totient is φ = 6741504.

The previous prime is 20793407. The next prime is 20793419. The reversal of 20793408 is 80439702.

It is not an unprimeable number, because it can be changed into a prime (20793407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5641 + ... + 8567.

Almost surely, 2^20793408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20793408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28261056).

20793408 is an abundant number, since it is smaller than the sum of its proper divisors (35728704).

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

20793408 is a wasteful number, since it uses less digits than its factorization.

20793408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20793408 is about 4559.9789473198. The cubic root of 20793408 is about 274.9847176080.

The spelling of 20793408 in words is "twenty million, seven hundred ninety-three thousand, four hundred eight".