28460281 has 12 divisors (see below), whose sum is σ = 30199312. Its totient is φ = 26805744.

The previous prime is 28460249. The next prime is 28460317. The reversal of 28460281 is 18206482.

It is not a de Polignac number, because 28460281 - 2⁵ = 28460249 is a prime.

It is a super-2 number, since 2×28460281² = 1619975189197922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28460231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35770 + ... + 36556.

Almost surely, 2^28460281 is an apocalyptic number.

It is an amenable number.

28460281 is a deficient number, since it is larger than the sum of its proper divisors (1739031).

28460281 is an equidigital number, since it uses as much as digits as its factorization.

28460281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28460281 is about 5334.8178038242. The cubic root of 28460281 is about 305.3137718707.

The spelling of 28460281 in words is "twenty-eight million, four hundred sixty thousand, two hundred eighty-one".