20280483 has 32 divisors (see below), whose sum is σ = 31680000. Its totient is φ = 12803616.

The previous prime is 20280461. The next prime is 20280493. The reversal of 20280483 is 38408202.

It is not a de Polignac number, because 20280483 - 2⁵ = 20280451 is a prime.

It is a super-2 number, since 2×20280483² = 822595981426578, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20280413) 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 31 ways as a sum of consecutive naturals, for example, 45978 + ... + 46416.

It is an arithmetic number, because the mean of its divisors is an integer number (990000).

Almost surely, 2^20280483 is an apocalyptic number.

20280483 is a deficient number, since it is larger than the sum of its proper divisors (11399517).

20280483 is a wasteful number, since it uses less digits than its factorization.

20280483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 20280483 is about 4503.3857263175. The cubic root of 20280483 is about 272.7047889647.

Adding to 20280483 its reverse (38408202), we get a palindrome (58688685).

The spelling of 20280483 in words is "twenty million, two hundred eighty thousand, four hundred eighty-three".