280327797 has 20 divisors (see below), whose sum is σ = 419443596. Its totient is φ = 186580800.

The previous prime is 280327763. The next prime is 280327813. The reversal of 280327797 is 797723082.

It can be written as a sum of positive squares in 2 ways, for example, as 186896241 + 93431556 = 13671^2 + 9666^2 .

It is not a de Polignac number, because 280327797 - 2¹⁴ = 280311413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280317797) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54313 + ... + 59249.

Almost surely, 2^280327797 is an apocalyptic number.

280327797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

280327797 is a deficient number, since it is larger than the sum of its proper divisors (139115799).

280327797 is an equidigital number, since it uses as much as digits as its factorization.

280327797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5650 (or 5641 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 280327797 is about 16742.9924744653. The cubic root of 280327797 is about 654.4684590777.

The spelling of 280327797 in words is "two hundred eighty million, three hundred twenty-seven thousand, seven hundred ninety-seven".