20369653 has 8 divisors (see below), whose sum is σ = 21520800. Its totient is φ = 19226448.

The previous prime is 20369639. The next prime is 20369677. The reversal of 20369653 is 35696302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20369653 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 (20369623) 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, 3738 + ... + 7396.

It is an arithmetic number, because the mean of its divisors is an integer number (2690100).

Almost surely, 2^20369653 is an apocalyptic number.

It is an amenable number.

20369653 is a deficient number, since it is larger than the sum of its proper divisors (1151147).

20369653 is a wasteful number, since it uses less digits than its factorization.

20369653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 20369653 is about 4513.2751965729. The cubic root of 20369653 is about 273.1038842164.

The spelling of 20369653 in words is "twenty million, three hundred sixty-nine thousand, six hundred fifty-three".