20483287 has 8 divisors (see below), whose sum is σ = 22660992. Its totient is φ = 18358200.

The previous prime is 20483279. The next prime is 20483293. The reversal of 20483287 is 78238402.

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 20483287 - 2³ = 20483279 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 (20483297) 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 7 ways as a sum of consecutive naturals, for example, 12333 + ... + 13894.

It is an arithmetic number, because the mean of its divisors is an integer number (2832624).

Almost surely, 2^20483287 is an apocalyptic number.

20483287 is a deficient number, since it is larger than the sum of its proper divisors (2177705).

20483287 is a wasteful number, since it uses less digits than its factorization.

20483287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26309.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 20483287 is about 4525.8465506466. The cubic root of 20483287 is about 273.6107879012.

It can be divided in two parts, 2048 and 3287, that added together give a palindrome (5335).

The spelling of 20483287 in words is "twenty million, four hundred eighty-three thousand, two hundred eighty-seven".