281268087 has 8 divisors (see below), whose sum is σ = 378890736. Its totient is φ = 185578752.

The previous prime is 281268079. The next prime is 281268101. The reversal of 281268087 is 780862182.

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

It is not a de Polignac number, because 281268087 - 2³ = 281268079 is a prime.

It is a super-2 number, since 2×281268087² = 158223473529279138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281268007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482988 + ... + 483569.

It is an arithmetic number, because the mean of its divisors is an integer number (47361342).

Almost surely, 2^281268087 is an apocalyptic number.

281268087 is a deficient number, since it is larger than the sum of its proper divisors (97622649).

281268087 is an equidigital number, since it uses as much as digits as its factorization.

281268087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966657.

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 281268087 is about 16771.0490727325. The cubic root of 281268087 is about 655.1993930955.

The spelling of 281268087 in words is "two hundred eighty-one million, two hundred sixty-eight thousand, eighty-seven".