20793620 has 12 divisors (see below), whose sum is σ = 43666644. Its totient is φ = 8317440.

The previous prime is 20793607. The next prime is 20793629. The reversal of 20793620 is 2639702.

It can be written as a sum of positive squares in 2 ways, for example, as 12138256 + 8655364 = 3484^2 + 2942^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20793629) 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 3 ways as a sum of consecutive naturals, for example, 519821 + ... + 519860.

It is an arithmetic number, because the mean of its divisors is an integer number (3638887).

Almost surely, 2^20793620 is an apocalyptic number.

20793620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20793620 is an abundant number, since it is smaller than the sum of its proper divisors (22873024).

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

20793620 is a wasteful number, since it uses less digits than its factorization.

20793620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039690 (or 1039688 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 20793620 is about 4560.0021929819. The cubic root of 20793620 is about 274.9856521440.

The spelling of 20793620 in words is "twenty million, seven hundred ninety-three thousand, six hundred twenty".