280314432 has 140 divisors (see below), whose sum is σ = 867436416. Its totient is φ = 89337600.

The previous prime is 280314413. The next prime is 280314443. The reversal of 280314432 is 234413082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 280314396 and 280314405.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118057 + ... + 120407.

Almost surely, 2^280314432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 280314432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433718208).

280314432 is an abundant number, since it is smaller than the sum of its proper divisors (587121984).

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

280314432 is a wasteful number, since it uses less digits than its factorization.

280314432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398 (or 2379 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 280314432 is about 16742.5933475074. The cubic root of 280314432 is about 654.4580580281.

The spelling of 280314432 in words is "two hundred eighty million, three hundred fourteen thousand, four hundred thirty-two".