28068451 has 4 divisors (see below), whose sum is σ = 28080304. Its totient is φ = 28056600.

The previous prime is 28068431. The next prime is 28068457. The reversal of 28068451 is 15486082.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28068451 - 2⁵ = 28068419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28068457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (7020076).

Almost surely, 2^28068451 is an apocalyptic number.

28068451 is a deficient number, since it is larger than the sum of its proper divisors (11853).

28068451 is an equidigital number, since it uses as much as digits as its factorization.

28068451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 28068451 is about 5297.9666854370. The cubic root of 28068451 is about 303.9061452825.

The spelling of 28068451 in words is "twenty-eight million, sixty-eight thousand, four hundred fifty-one".