281996 has 48 divisors (see below), whose sum is σ = 635040. Its totient is φ = 107520.

The previous prime is 281993. The next prime is 282001. The reversal of 281996 is 699182.

281996 = T₃₃ + T₃₄ + ... + T₁₁₉.

Its product of digits (7776) is a multiple of the sum of its prime divisors (72).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 281996.

It is not an unprimeable number, because it can be changed into a prime (281993) 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, 9710 + ... + 9738.

It is an arithmetic number, because the mean of its divisors is an integer number (13230).

2²⁸¹⁹⁹⁶ is an apocalyptic number.

281996 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

281996 is an abundant number, since it is smaller than the sum of its proper divisors (353044).

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

281996 is a wasteful number, since it uses less digits than its factorization.

281996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 72 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 281996 is about 531.0329556628. The cubic root of 281996 is about 65.5764118048.

Subtracting from 281996 its sum of digits (35), we obtain a square (281961 = 531²).

The spelling of 281996 in words is "two hundred eighty-one thousand, nine hundred ninety-six".