20488953 has 4 divisors (see below), whose sum is σ = 27318608. Its totient is φ = 13659300.

The previous prime is 20488943. The next prime is 20488997. The reversal of 20488953 is 35988402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20488953 - 2⁵ = 20488921 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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3414823 + ... + 3414828.

It is an arithmetic number, because the mean of its divisors is an integer number (6829652).

Almost surely, 2^20488953 is an apocalyptic number.

It is an amenable number.

20488953 is a deficient number, since it is larger than the sum of its proper divisors (6829655).

20488953 is an equidigital number, since it uses as much as digits as its factorization.

20488953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829654.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 20488953 is about 4526.4724676065. The cubic root of 20488953 is about 273.6360139274.

The spelling of 20488953 in words is "twenty million, four hundred eighty-eight thousand, nine hundred fifty-three".