20735893 has 2 divisors, whose sum is σ = 20735894. Its totient is φ = 20735892.

The previous prime is 20735887. The next prime is 20735917. The reversal of 20735893 is 39853702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 6084 = 4553^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 20735893 - 2¹³ = 20727701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20735293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10367946 + 10367947.

It is an arithmetic number, because the mean of its divisors is an integer number (10367947).

Almost surely, 2^20735893 is an apocalyptic number.

It is an amenable number.

20735893 is a deficient number, since it is larger than the sum of its proper divisors (1).

20735893 is an equidigital number, since it uses as much as digits as its factorization.

20735893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 20735893 is about 4553.6680818874. The cubic root of 20735893 is about 274.7309456641.

It can be divided in two parts, 207 and 35893, that added together give a square (36100 = 190²).

The spelling of 20735893 in words is "twenty million, seven hundred thirty-five thousand, eight hundred ninety-three".