20492783 has 8 divisors (see below), whose sum is σ = 21303408. Its totient is φ = 19695744.

The previous prime is 20492761. The next prime is 20492789. The reversal of 20492783 is 38729402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20492783 - 2¹⁶ = 20427247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20492789) 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, 266 + ... + 6407.

It is an arithmetic number, because the mean of its divisors is an integer number (2662926).

Almost surely, 2^20492783 is an apocalyptic number.

20492783 is a deficient number, since it is larger than the sum of its proper divisors (810625).

20492783 is an equidigital number, since it uses as much as digits as its factorization.

20492783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6793.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 20492783 is about 4526.8955145883. The cubic root of 20492783 is about 273.6530631252.

The spelling of 20492783 in words is "twenty million, four hundred ninety-two thousand, seven hundred eighty-three".