20735769 has 8 divisors (see below), whose sum is σ = 27770400. Its totient is φ = 13762496.

The previous prime is 20735753. The next prime is 20735779. The reversal of 20735769 is 96753702.

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 20735769 - 2⁴ = 20735753 is a prime.

It is a super-2 number, since 2×20735769² = 859944232042722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20735749) 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 7 ways as a sum of consecutive naturals, for example, 14544 + ... + 15905.

It is an arithmetic number, because the mean of its divisors is an integer number (3471300).

Almost surely, 2^20735769 is an apocalyptic number.

It is an amenable number.

20735769 is a deficient number, since it is larger than the sum of its proper divisors (7034631).

20735769 is a wasteful number, since it uses less digits than its factorization.

20735769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30679.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 20735769 is about 4553.6544664698. The cubic root of 20735769 is about 274.7303980354.

The spelling of 20735769 in words is "twenty million, seven hundred thirty-five thousand, seven hundred sixty-nine".