20653534 has 16 divisors (see below), whose sum is σ = 33872256. Its totient is φ = 9367000.

The previous prime is 20653519. The next prime is 20653537. The reversal of 20653534 is 43535602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653537) 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, 13509 + ... + 14959.

It is an arithmetic number, because the mean of its divisors is an integer number (2117016).

Almost surely, 2^20653534 is an apocalyptic number.

20653534 is a deficient number, since it is larger than the sum of its proper divisors (13218722).

20653534 is a wasteful number, since it uses less digits than its factorization.

20653534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 20653534 is about 4544.6159353679. The cubic root of 20653534 is about 274.3667367959.

The spelling of 20653534 in words is "twenty million, six hundred fifty-three thousand, five hundred thirty-four".