20740893 has 4 divisors (see below), whose sum is σ = 27654528. Its totient is φ = 13827260.

The previous prime is 20740877. The next prime is 20740903. The reversal of 20740893 is 39804702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20740893 - 2⁴ = 20740877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20740823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3456813 + ... + 3456818.

It is an arithmetic number, because the mean of its divisors is an integer number (6913632).

Almost surely, 2^20740893 is an apocalyptic number.

It is an amenable number.

20740893 is a deficient number, since it is larger than the sum of its proper divisors (6913635).

20740893 is an equidigital number, since it uses as much as digits as its factorization.

20740893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913634.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20740893 is about 4554.2170567508. The cubic root of 20740893 is about 274.7530256445.

The spelling of 20740893 in words is "twenty million, seven hundred forty thousand, eight hundred ninety-three".