20452963 has 6 divisors (see below), whose sum is σ = 21135012. Its totient is φ = 19792260.

The previous prime is 20452937. The next prime is 20452967. The reversal of 20452963 is 36925402.

It is not a de Polignac number, because 20452963 - 2⁵ = 20452931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20452967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9681 + ... + 11602.

It is an arithmetic number, because the mean of its divisors is an integer number (3522502).

Almost surely, 2^20452963 is an apocalyptic number.

20452963 is a deficient number, since it is larger than the sum of its proper divisors (682049).

20452963 is an equidigital number, since it uses as much as digits as its factorization.

20452963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21345 (or 21314 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 20452963 is about 4522.4952183502. The cubic root of 20452963 is about 273.4757010008.

The spelling of 20452963 in words is "twenty million, four hundred fifty-two thousand, nine hundred sixty-three".