20792408 has 48 divisors (see below), whose sum is σ = 48268080. Its totient is φ = 8225568.

The previous prime is 20792407. The next prime is 20792419. The reversal of 20792408 is 80429702.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20792407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1599410 + ... + 1599422.

It is an arithmetic number, because the mean of its divisors is an integer number (1005585).

Almost surely, 2^20792408 is an apocalyptic number.

20792408 is a gapful number since it is divisible by the number (28) 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 20792408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24134040).

20792408 is an abundant number, since it is smaller than the sum of its proper divisors (27475672).

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

20792408 is an frugal number, since it uses more digits than its factorization.

20792408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 22 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 20792408 is about 4559.8692963724. The cubic root of 20792408 is about 274.9803093339.

The spelling of 20792408 in words is "twenty million, seven hundred ninety-two thousand, four hundred eight".