20283481 has 4 divisors (see below), whose sum is σ = 20480512. Its totient is φ = 20086452.

The previous prime is 20283467. The next prime is 20283491. The reversal of 20283481 is 18438202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20283481 - 2⁷ = 20283353 is a prime.

It is a super-2 number, since 2×20283481² = 822839202954722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20283421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98361 + ... + 98566.

It is an arithmetic number, because the mean of its divisors is an integer number (5120128).

Almost surely, 2^20283481 is an apocalyptic number.

It is an amenable number.

20283481 is a deficient number, since it is larger than the sum of its proper divisors (197031).

20283481 is a wasteful number, since it uses less digits than its factorization.

20283481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197030.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 20283481 is about 4503.7185746891. The cubic root of 20283481 is about 272.7182259996.

The spelling of 20283481 in words is "twenty million, two hundred eighty-three thousand, four hundred eighty-one".