280327943 has 8 divisors (see below), whose sum is σ = 339220512. Its totient is φ = 226146816.

The previous prime is 280327937. The next prime is 280327961. The reversal of 280327943 is 349723082.

It is a happy number.

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

It is not a de Polignac number, because 280327943 - 2⁸ = 280327687 is a prime.

It is a super-2 number, since 2×280327943² = 157167511253222498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280327897 and 280327906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280327903) 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, 1177730 + ... + 1177967.

It is an arithmetic number, because the mean of its divisors is an integer number (42402564).

Almost surely, 2^280327943 is an apocalyptic number.

280327943 is a deficient number, since it is larger than the sum of its proper divisors (58892569).

280327943 is a wasteful number, since it uses less digits than its factorization.

280327943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355721.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 280327943 is about 16742.9968344977. The cubic root of 280327943 is about 654.4685726975.

The spelling of 280327943 in words is "two hundred eighty million, three hundred twenty-seven thousand, nine hundred forty-three".