20460889 has 8 divisors (see below), whose sum is σ = 21234248. Its totient is φ = 19699200.

The previous prime is 20460887. The next prime is 20460893. The reversal of 20460889 is 98806402.

It can be written as a sum of positive squares in 4 ways, for example, as 10272025 + 10188864 = 3205^2 + 3192^2 .

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 20460889 - 2¹ = 20460887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20460887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (2654281).

Almost surely, 2^20460889 is an apocalyptic number.

It is an amenable number.

20460889 is a deficient number, since it is larger than the sum of its proper divisors (773359).

20460889 is an equidigital number, since it uses as much as digits as its factorization.

20460889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 20460889 is about 4523.3714196382. The cubic root of 20460889 is about 273.5110225085.

The spelling of 20460889 in words is "twenty million, four hundred sixty thousand, eight hundred eighty-nine".