20924963 has 8 divisors (see below), whose sum is σ = 21896736. Its totient is φ = 19958400.

The previous prime is 20924957. The next prime is 20924987. The reversal of 20924963 is 36942902.

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

It is a cyclic number.

It is not a de Polignac number, because 20924963 - 2⁶ = 20924899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20924903) 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, 8603 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (2737092).

Almost surely, 2^20924963 is an apocalyptic number.

20924963 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20924963 is a deficient number, since it is larger than the sum of its proper divisors (971773).

20924963 is a wasteful number, since it uses less digits than its factorization.

20924963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20924963 is about 4574.3811603320. The cubic root of 20924963 is about 275.5634200830.

The spelling of 20924963 in words is "twenty million, nine hundred twenty-four thousand, nine hundred sixty-three".