20916363 has 16 divisors (see below), whose sum is σ = 30675456. Its totient is φ = 12596640.

The previous prime is 20916349. The next prime is 20916403. The reversal of 20916363 is 36361902.

It is a happy number.

It is not a de Polignac number, because 20916363 - 2⁵ = 20916331 is a prime.

It is a super-2 number, since 2×20916363² = 874988482295538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20916363.

It is not an unprimeable number, because it can be changed into a prime (20916263) 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 15 ways as a sum of consecutive naturals, for example, 3873 + ... + 7538.

It is an arithmetic number, because the mean of its divisors is an integer number (1917216).

Almost surely, 2^20916363 is an apocalyptic number.

20916363 is a deficient number, since it is larger than the sum of its proper divisors (9759093).

20916363 is a wasteful number, since it uses less digits than its factorization.

20916363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11474.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 20916363 is about 4573.4410458647. The cubic root of 20916363 is about 275.5256634229.

The spelling of 20916363 in words is "twenty million, nine hundred sixteen thousand, three hundred sixty-three".