20359769 has 12 divisors (see below), whose sum is σ = 21614736. Its totient is φ = 19166448.

The previous prime is 20359723. The next prime is 20359771. The reversal of 20359769 is 96795302.

It is not a de Polignac number, because 20359769 - 2⁸ = 20359513 is a prime.

It is a super-2 number, since 2×20359769² = 829040387466722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20359709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35882 + ... + 36444.

It is an arithmetic number, because the mean of its divisors is an integer number (1801228).

Almost surely, 2^20359769 is an apocalyptic number.

20359769 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20359769 is a deficient number, since it is larger than the sum of its proper divisors (1254967).

20359769 is an equidigital number, since it uses as much as digits as its factorization.

20359769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 20359769 is about 4512.1800717613. The cubic root of 20359769 is about 273.0597041885.

The spelling of 20359769 in words is "twenty million, three hundred fifty-nine thousand, seven hundred sixty-nine".