280000049 has 8 divisors (see below), whose sum is σ = 321917568. Its totient is φ = 238561920.

The previous prime is 280000043. The next prime is 280000067. The reversal of 280000049 is 940000082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280000049 - 2⁴ = 280000033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 279999979 and 280000033.

It is not an unprimeable number, because it can be changed into a prime (280000043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118592 + ... + 120929.

It is an arithmetic number, because the mean of its divisors is an integer number (40239696).

Almost surely, 2^280000049 is an apocalyptic number.

It is an amenable number.

280000049 is a deficient number, since it is larger than the sum of its proper divisors (41917519).

280000049 is a wasteful number, since it uses less digits than its factorization.

280000049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239695.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 280000049 is about 16733.2019948365. The cubic root of 280000049 is about 654.2133002002.

The spelling of 280000049 in words is "two hundred eighty million, forty-nine", and thus it is an aban number.