280797121 has 8 divisors (see below), whose sum is σ = 308037600. Its totient is φ = 253842240.

The previous prime is 280797089. The next prime is 280797137. The reversal of 280797121 is 121797082.

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 280797121 - 2⁵ = 280797089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280797161) 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, 69336 + ... + 73273.

It is an arithmetic number, because the mean of its divisors is an integer number (38504700).

Almost surely, 2^280797121 is an apocalyptic number.

It is an amenable number.

280797121 is a deficient number, since it is larger than the sum of its proper divisors (27240479).

280797121 is a wasteful number, since it uses less digits than its factorization.

280797121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142799.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 280797121 is about 16757.0021483558. The cubic root of 280797121 is about 654.8334918517.

The spelling of 280797121 in words is "two hundred eighty million, seven hundred ninety-seven thousand, one hundred twenty-one".