20793390 has 32 divisors (see below), whose sum is σ = 50042880. Its totient is φ = 5529504.

The previous prime is 20793361. The next prime is 20793407. The reversal of 20793390 is 9339702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13647 + ... + 15093.

It is an arithmetic number, because the mean of its divisors is an integer number (1563840).

Almost surely, 2^20793390 is an apocalyptic number.

20793390 is an abundant number, since it is smaller than the sum of its proper divisors (29249490).

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

20793390 is a wasteful number, since it uses less digits than its factorization.

20793390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936.

The product of its (nonzero) digits is 10206, while the sum is 33.

The square root of 20793390 is about 4559.9769736261. The cubic root of 20793390 is about 274.9846382604.

The spelling of 20793390 in words is "twenty million, seven hundred ninety-three thousand, three hundred ninety".