20481282 has 16 divisors (see below), whose sum is σ = 45514080. Its totient is φ = 6827076.

The previous prime is 20481271. The next prime is 20481283. The reversal of 20481282 is 28218402.

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 (20481283) 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, 189588 + ... + 189695.

It is an arithmetic number, because the mean of its divisors is an integer number (2844630).

Almost surely, 2^20481282 is an apocalyptic number.

20481282 is an abundant number, since it is smaller than the sum of its proper divisors (25032798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20481282 is a wasteful number, since it uses less digits than its factorization.

20481282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379294 (or 379288 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20481282 is about 4525.6250397045. The cubic root of 20481282 is about 273.6018601751.

Adding to 20481282 its reverse (28218402), we get a palindrome (48699684).

The spelling of 20481282 in words is "twenty million, four hundred eighty-one thousand, two hundred eighty-two".