20282481 has 48 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 12188880.

The previous prime is 20282473. The next prime is 20282543. The reversal of 20282481 is 18428202.

It is not a de Polignac number, because 20282481 - 2³ = 20282473 is a prime.

It is a super-2 number, since 2×20282481² = 822758071030722, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20282081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106096 + ... + 106286.

It is an arithmetic number, because the mean of its divisors is an integer number (698880).

Almost surely, 2^20282481 is an apocalyptic number.

It is an amenable number.

20282481 is a deficient number, since it is larger than the sum of its proper divisors (13263759).

20282481 is a wasteful number, since it uses less digits than its factorization.

20282481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 236 counting only the distinct ones).

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

The square root of 20282481 is about 4503.6075539505. The cubic root of 20282481 is about 272.7137441471.

The spelling of 20282481 in words is "twenty million, two hundred eighty-two thousand, four hundred eighty-one".