20794842 has 24 divisors (see below), whose sum is σ = 47706516. Its totient is φ = 6523776.

The previous prime is 20794771. The next prime is 20794847. The reversal of 20794842 is 24849702.

It can be written as a sum of positive squares in 2 ways, for example, as 20331081 + 463761 = 4509^2 + 681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20794797 and 20794806.

It is not an unprimeable number, because it can be changed into a prime (20794847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33673 + ... + 34284.

Almost surely, 2^20794842 is an apocalyptic number.

20794842 is an abundant number, since it is smaller than the sum of its proper divisors (26911674).

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

20794842 is a wasteful number, since it uses less digits than its factorization.

20794842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67982 (or 67979 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20794842 is about 4560.1361821770. The cubic root of 20794842 is about 274.9910388265.

The spelling of 20794842 in words is "twenty million, seven hundred ninety-four thousand, eight hundred forty-two".