20795838 has 16 divisors (see below), whose sum is σ = 47533440. Its totient is φ = 5941656.

The previous prime is 20795833. The next prime is 20795843. The reversal of 20795838 is 83859702.

It is an interprime number because it is at equal distance from previous prime (20795833) and next prime (20795843).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 495139 = 20795838 / (2 + 0 + 7 + 9 + 5 + 8 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 20795838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20795833) 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, 247528 + ... + 247611.

It is an arithmetic number, because the mean of its divisors is an integer number (2970840).

Almost surely, 2^20795838 is an apocalyptic number.

20795838 is an abundant number, since it is smaller than the sum of its proper divisors (26737602).

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

20795838 is a wasteful number, since it uses less digits than its factorization.

20795838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495151.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 20795838 is about 4560.2453881343. The cubic root of 20795838 is about 274.9954291251.

The spelling of 20795838 in words is "twenty million, seven hundred ninety-five thousand, eight hundred thirty-eight".