20484885 has 8 divisors (see below), whose sum is σ = 32775840. Its totient is φ = 10925264.

The previous prime is 20484883. The next prime is 20484901. The reversal of 20484885 is 58848402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20484885 - 2¹ = 20484883 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20484883) 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 7 ways as a sum of consecutive naturals, for example, 682815 + ... + 682844.

It is an arithmetic number, because the mean of its divisors is an integer number (4096980).

Almost surely, 2^20484885 is an apocalyptic number.

It is an amenable number.

20484885 is a deficient number, since it is larger than the sum of its proper divisors (12290955).

20484885 is a wasteful number, since it uses less digits than its factorization.

20484885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365667.

The product of its (nonzero) digits is 81920, while the sum is 39.

The square root of 20484885 is about 4526.0230887613. The cubic root of 20484885 is about 273.6179029486.

The spelling of 20484885 in words is "twenty million, four hundred eighty-four thousand, eight hundred eighty-five".