20736453 has 8 divisors (see below), whose sum is σ = 28027648. Its totient is φ = 13634784.

The previous prime is 20736451. The next prime is 20736461. The reversal of 20736453 is 35463702.

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

It is not a de Polignac number, because 20736453 - 2¹ = 20736451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20736453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20736451) 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, 47125 + ... + 47562.

It is an arithmetic number, because the mean of its divisors is an integer number (3503456).

Almost surely, 2^20736453 is an apocalyptic number.

It is an amenable number.

20736453 is a deficient number, since it is larger than the sum of its proper divisors (7291195).

20736453 is an equidigital number, since it uses as much as digits as its factorization.

20736453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94763.

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 20736453 is about 4553.7295703632. The cubic root of 20736453 is about 274.7334187984.

The spelling of 20736453 in words is "twenty million, seven hundred thirty-six thousand, four hundred fifty-three".