20488895 has 16 divisors (see below), whose sum is σ = 28366848. Its totient is φ = 13915680.

The previous prime is 20488891. The next prime is 20488901. The reversal of 20488895 is 59888402.

It is not a de Polignac number, because 20488895 - 2² = 20488891 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1010 + ... + 6480.

It is an arithmetic number, because the mean of its divisors is an integer number (1772928).

Almost surely, 2^20488895 is an apocalyptic number.

20488895 is a deficient number, since it is larger than the sum of its proper divisors (7877953).

20488895 is a wasteful number, since it uses less digits than its factorization.

20488895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 20488895 is about 4526.4660608470. The cubic root of 20488895 is about 273.6357557248.

The spelling of 20488895 in words is "twenty million, four hundred eighty-eight thousand, eight hundred ninety-five".