20488995 has 24 divisors (see below), whose sum is σ = 37604736. Its totient is φ = 10284288.

The previous prime is 20488943. The next prime is 20488997. The reversal of 20488995 is 59988402.

It is not a de Polignac number, because 20488995 - 2⁶ = 20488931 is a prime.

It is a super-2 number, since 2×20488995² = 839597832220050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20488995.

It is not an unprimeable number, because it can be changed into a prime (20488997) 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 23 ways as a sum of consecutive naturals, for example, 12627 + ... + 14156.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^20488995 is an apocalyptic number.

20488995 is a deficient number, since it is larger than the sum of its proper divisors (17115741).

20488995 is a wasteful number, since it uses less digits than its factorization.

20488995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26811 (or 26808 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 20488995 is about 4526.4771069785. The cubic root of 20488995 is about 273.6362009014.

The spelling of 20488995 in words is "twenty million, four hundred eighty-eight thousand, nine hundred ninety-five".