280454 has 4 divisors (see below), whose sum is σ = 420684. Its totient is φ = 140226.

The previous prime is 280451. The next prime is 280463. The reversal of 280454 is 454082.

280454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×280454² = 157308892232, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 280454.

It is not an unprimeable number, because it can be changed into a prime (280451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70112 + ... + 70115.

It is an arithmetic number, because the mean of its divisors is an integer number (105171).

2²⁸⁰⁴⁵⁴ is an apocalyptic number.

280454 is a deficient number, since it is larger than the sum of its proper divisors (140230).

280454 is a wasteful number, since it uses less digits than its factorization.

280454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140229.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 280454 is about 529.5790781366. The cubic root of 280454 is about 65.4566657796.

The spelling of 280454 in words is "two hundred eighty thousand, four hundred fifty-four".