280430427 has 8 divisors (see below), whose sum is σ = 373990464. Its totient is φ = 186912008.

The previous prime is 280430401. The next prime is 280430429. The reversal of 280430427 is 724034082.

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 280430427 - 2¹² = 280426331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 280430394 and 280430403.

It is not an unprimeable number, because it can be changed into a prime (280430429) 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, 12568 + ... + 26810.

It is an arithmetic number, because the mean of its divisors is an integer number (46748808).

Almost surely, 2^280430427 is an apocalyptic number.

280430427 is a deficient number, since it is larger than the sum of its proper divisors (93560037).

280430427 is a wasteful number, since it uses less digits than its factorization.

280430427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20809.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 280430427 is about 16746.0570583048. The cubic root of 280430427 is about 654.5483178519.

The spelling of 280430427 in words is "two hundred eighty million, four hundred thirty thousand, four hundred twenty-seven".