20488963 has 4 divisors (see below), whose sum is σ = 22351608. Its totient is φ = 18626320.

The previous prime is 20488943. The next prime is 20488997. The reversal of 20488963 is 36988402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20488963 - 2⁵ = 20488931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20488903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 931306 + ... + 931327.

It is an arithmetic number, because the mean of its divisors is an integer number (5587902).

Almost surely, 2^20488963 is an apocalyptic number.

20488963 is a deficient number, since it is larger than the sum of its proper divisors (1862645).

20488963 is a wasteful number, since it uses less digits than its factorization.

20488963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862644.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 20488963 is about 4526.4735722193. The cubic root of 20488963 is about 273.6360584451.

It can be divided in two parts, 2048 and 8963, that added together give a palindrome (11011).

The spelling of 20488963 in words is "twenty million, four hundred eighty-eight thousand, nine hundred sixty-three".