280030797 has 32 divisors (see below), whose sum is σ = 437936000. Its totient is φ = 176359680.

The previous prime is 280030789. The next prime is 280030799. The reversal of 280030797 is 797030082.

It is not a de Polignac number, because 280030797 - 2³ = 280030789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280030799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277029 + ... + 278037.

It is an arithmetic number, because the mean of its divisors is an integer number (13685500).

Almost surely, 2^280030797 is an apocalyptic number.

280030797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

280030797 is a deficient number, since it is larger than the sum of its proper divisors (157905203).

280030797 is a wasteful number, since it uses less digits than its factorization.

280030797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1572 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 280030797 is about 16734.1207417659. The cubic root of 280030797 is about 654.2372466415.

The spelling of 280030797 in words is "two hundred eighty million, thirty thousand, seven hundred ninety-seven".