280670 has 32 divisors (see below), whose sum is σ = 580608. Its totient is φ = 96768.

The previous prime is 280639. The next prime is 280673. The reversal of 280670 is 76082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2147 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (18144).

2²⁸⁰⁶⁷⁰ is an apocalyptic number.

280670 is an abundant number, since it is smaller than the sum of its proper divisors (299938).

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

280670 is a wasteful number, since it uses less digits than its factorization.

280670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 280670 is about 529.7829744339. The cubic root of 280670 is about 65.4734659341.

The spelling of 280670 in words is "two hundred eighty thousand, six hundred seventy".