20280000241 has 4 divisors (see below), whose sum is σ = 20280290800. Its totient is φ = 20279709684.

The previous prime is 20280000239. The next prime is 20280000253. The reversal of 20280000241 is 14200008202.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20280000241 - 2¹ = 20280000239 is a prime.

It is a super-2 number, since 2×20280000241² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20280000941) 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, 29530 + ... + 203548.

It is an arithmetic number, because the mean of its divisors is an integer number (5070072700).

Almost surely, 2^20280000241 is an apocalyptic number.

It is an amenable number.

20280000241 is a deficient number, since it is larger than the sum of its proper divisors (290559).

20280000241 is a wasteful number, since it uses less digits than its factorization.

20280000241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290558.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20280000241 its reverse (14200008202), we get a palindrome (34480008443).

The spelling of 20280000241 in words is "twenty billion, two hundred eighty million, two hundred forty-one", and thus it is an aban number.