28496281 has 8 divisors (see below), whose sum is σ = 31213728. Its totient is φ = 25800000.

The previous prime is 28496269. The next prime is 28496291. The reversal of 28496281 is 18269482.

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

It is a cyclic number.

It is not a de Polignac number, because 28496281 - 2¹¹ = 28494233 is a prime.

It is a super-2 number, since 2×28496281² = 1624076061661922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28496291) 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 7 ways as a sum of consecutive naturals, for example, 2400 + ... + 7921.

It is an arithmetic number, because the mean of its divisors is an integer number (3901716).

Almost surely, 2^28496281 is an apocalyptic number.

It is an amenable number.

28496281 is a deficient number, since it is larger than the sum of its proper divisors (2717447).

28496281 is a wasteful number, since it uses less digits than its factorization.

28496281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583.

The product of its digits is 55296, while the sum is 40.

The square root of 28496281 is about 5338.1907983885. The cubic root of 28496281 is about 305.4424502051.

The spelling of 28496281 in words is "twenty-eight million, four hundred ninety-six thousand, two hundred eighty-one".