20326653 has 16 divisors (see below), whose sum is σ = 30928960. Its totient is φ = 13184208.

The previous prime is 20326643. The next prime is 20326667. The reversal of 20326653 is 35662302.

20326653 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 6 + 653 = 666.

It is not a de Polignac number, because 20326653 - 2¹⁸ = 20064509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20326643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9175 + ... + 11172.

It is an arithmetic number, because the mean of its divisors is an integer number (1933060).

Almost surely, 2^20326653 is an apocalyptic number.

It is an amenable number.

20326653 is a deficient number, since it is larger than the sum of its proper divisors (10602307).

20326653 is a wasteful number, since it uses less digits than its factorization.

20326653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20393 (or 20387 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 20326653 is about 4508.5089552977. The cubic root of 20326653 is about 272.9115762416.

Adding to 20326653 its reverse (35662302), we get a palindrome (55988955).

The spelling of 20326653 in words is "twenty million, three hundred twenty-six thousand, six hundred fifty-three".