280382 has 4 divisors (see below), whose sum is σ = 420576. Its totient is φ = 140190.

The previous prime is 280373. The next prime is 280409. The reversal of 280382 is 283082.

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

It is a super-4 number, since 4×280382⁴ (a number of 23 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70094 + ... + 70097.

It is an arithmetic number, because the mean of its divisors is an integer number (105144).

2²⁸⁰³⁸² is an apocalyptic number.

280382 is a deficient number, since it is larger than the sum of its proper divisors (140194).

280382 is a wasteful number, since it uses less digits than its factorization.

280382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140193.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 280382 is about 529.5110952567. The cubic root of 280382 is about 65.4510638113.

The spelling of 280382 in words is "two hundred eighty thousand, three hundred eighty-two".