281402 has 8 divisors (see below), whose sum is σ = 460512. Its totient is φ = 127900.

The previous prime is 281381. The next prime is 281419. The reversal of 281402 is 204182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281402.

It is an unprimeable number.

281402 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6374 + ... + 6417.

It is an arithmetic number, because the mean of its divisors is an integer number (57564).

2²⁸¹⁴⁰² is an apocalyptic number.

281402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

281402 is a deficient number, since it is larger than the sum of its proper divisors (179110).

281402 is a wasteful number, since it uses less digits than its factorization.

281402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12804.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 281402 is about 530.4733735071. The cubic root of 281402 is about 65.5303357723.

Adding to 281402 its reverse (204182), we get a palindrome (485584).

It can be divided in two parts, 28140 and 2, that multiplied together give a triangular number (56280 = T₃₃₅).

The spelling of 281402 in words is "two hundred eighty-one thousand, four hundred two".