280790432 has 24 divisors (see below), whose sum is σ = 595330596. Its totient is φ = 129595392.

The previous prime is 280790413. The next prime is 280790453. The reversal of 280790432 is 234097082.

280790432 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 280763536 + 26896 = 16756^2 + 164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 280790392 and 280790401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337073 + ... + 337904.

Almost surely, 2^280790432 is an apocalyptic number.

It is an amenable number.

280790432 is an abundant number, since it is smaller than the sum of its proper divisors (314540164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280790432 is a wasteful number, since it uses less digits than its factorization.

280790432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675000 (or 674992 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 280790432 is about 16756.8025589609. The cubic root of 280790432 is about 654.8282921118.

It can be divided in two parts, 2807 and 90432, that added together give a palindrome (93239).

The spelling of 280790432 in words is "two hundred eighty million, seven hundred ninety thousand, four hundred thirty-two".