281972229 has 24 divisors (see below), whose sum is σ = 472288320. Its totient is φ = 146477760.

The previous prime is 281972213. The next prime is 281972231. The reversal of 281972229 is 922279182.

It is not a de Polignac number, because 281972229 - 2⁴ = 281972213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281972239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52944 + ... + 58025.

It is an arithmetic number, because the mean of its divisors is an integer number (19678680).

Almost surely, 2^281972229 is an apocalyptic number.

It is an amenable number.

281972229 is a deficient number, since it is larger than the sum of its proper divisors (190316091).

281972229 is a wasteful number, since it uses less digits than its factorization.

281972229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111001 (or 110990 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 281972229 is about 16792.0287338963. The cubic root of 281972229 is about 655.7456915375.

The spelling of 281972229 in words is "two hundred eighty-one million, nine hundred seventy-two thousand, two hundred twenty-nine".