280004630 has 8 divisors (see below), whose sum is σ = 504008352. Its totient is φ = 112001848.

The previous prime is 280004611. The next prime is 280004639. The reversal of 280004630 is 36400082.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 280004596 and 280004605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280004639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14000222 + ... + 14000241.

It is an arithmetic number, because the mean of its divisors is an integer number (63001044).

Almost surely, 2^280004630 is an apocalyptic number.

280004630 is a deficient number, since it is larger than the sum of its proper divisors (224003722).

280004630 is a wasteful number, since it uses less digits than its factorization.

280004630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28000470.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 280004630 is about 16733.3388778211. The cubic root of 280004630 is about 654.2168679790.

The spelling of 280004630 in words is "two hundred eighty million, four thousand, six hundred thirty".