281672 has 16 divisors (see below), whose sum is σ = 534060. Its totient is φ = 139264.

The previous prime is 281669. The next prime is 281683. The reversal of 281672 is 276182.

It can be written as a sum of positive squares in 2 ways, for example, as 244036 + 37636 = 494^2 + 194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968 + ... + 1224.

2²⁸¹⁶⁷² is an apocalyptic number.

It is an amenable number.

281672 is a deficient number, since it is larger than the sum of its proper divisors (252388).

281672 is a wasteful number, since it uses less digits than its factorization.

281672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 396 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 281672 is about 530.7278021736. The cubic root of 281672 is about 65.5512874534.

The spelling of 281672 in words is "two hundred eighty-one thousand, six hundred seventy-two".