20273481 has 12 divisors (see below), whose sum is σ = 29323008. Its totient is φ = 13497624.

The previous prime is 20273479. The next prime is 20273501. The reversal of 20273481 is 18437202.

It is not a de Polignac number, because 20273481 - 2¹ = 20273479 is a prime.

It is a super-2 number, since 2×20273481² = 822028063714722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20273431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12016 + ... + 13598.

It is an arithmetic number, because the mean of its divisors is an integer number (2443584).

Almost surely, 2^20273481 is an apocalyptic number.

It is an amenable number.

20273481 is a deficient number, since it is larger than the sum of its proper divisors (9049527).

20273481 is a wasteful number, since it uses less digits than its factorization.

20273481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20273481 is about 4502.6082441181. The cubic root of 20273481 is about 272.6734008442.

The spelling of 20273481 in words is "twenty million, two hundred seventy-three thousand, four hundred eighty-one".