20653045 has 32 divisors (see below), whose sum is σ = 30371328. Its totient is φ = 13160448.

The previous prime is 20653007. The next prime is 20653063. The reversal of 20653045 is 54035602.

It is not a de Polignac number, because 20653045 - 2⁷ = 20652917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61117 + ... + 61453.

It is an arithmetic number, because the mean of its divisors is an integer number (949104).

Almost surely, 2^20653045 is an apocalyptic number.

It is an amenable number.

20653045 is a deficient number, since it is larger than the sum of its proper divisors (9718283).

20653045 is a wasteful number, since it uses less digits than its factorization.

20653045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20653045 is about 4544.5621351237. The cubic root of 20653045 is about 274.3645714458.

Adding to 20653045 its reverse (54035602), we get a palindrome (74688647).

The spelling of 20653045 in words is "twenty million, six hundred fifty-three thousand, forty-five".