280464 has 20 divisors (see below), whose sum is σ = 724656. Its totient is φ = 93472.

The previous prime is 280463. The next prime is 280487. The reversal of 280464 is 464082.

280464 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 2⁹ + 8 + 4 + 0 + 6⁷ + 4 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280464.

It is not an unprimeable number, because it can be changed into a prime (280463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2874 + ... + 2969.

2²⁸⁰⁴⁶⁴ is an apocalyptic number.

280464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

280464 is an abundant number, since it is smaller than the sum of its proper divisors (444192).

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

280464 is a wasteful number, since it uses less digits than its factorization.

280464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5848 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 280464 is about 529.5885195130. The cubic root of 280464 is about 65.4574437549.

The spelling of 280464 in words is "two hundred eighty thousand, four hundred sixty-four".