280224001 has 4 divisors (see below), whose sum is σ = 280260400. Its totient is φ = 280187604.

The previous prime is 280223987. The next prime is 280224031. The reversal of 280224001 is 100422082.

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 280224001 - 2⁵ = 280223969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 280224001.

It is not an unprimeable number, because it can be changed into a prime (280224031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (70065100).

Almost surely, 2^280224001 is an apocalyptic number.

It is an amenable number.

280224001 is a deficient number, since it is larger than the sum of its proper divisors (36399).

280224001 is a wasteful number, since it uses less digits than its factorization.

280224001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36398.

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

The square root of 280224001 is about 16739.8925026417. The cubic root of 280224001 is about 654.3876731848.

Adding to 280224001 its reverse (100422082), we get a palindrome (380646083).

It can be divided in two parts, 28022 and 4001, that added together give a palindrome (32023).

The spelling of 280224001 in words is "two hundred eighty million, two hundred twenty-four thousand, one".