28017454 has 4 divisors (see below), whose sum is σ = 42026184. Its totient is φ = 14008726.

The previous prime is 28017449. The next prime is 28017461. The reversal of 28017454 is 45471082.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7004362 + ... + 7004365.

It is an arithmetic number, because the mean of its divisors is an integer number (10506546).

Almost surely, 2^28017454 is an apocalyptic number.

28017454 is a deficient number, since it is larger than the sum of its proper divisors (14008730).

28017454 is a wasteful number, since it uses less digits than its factorization.

28017454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14008729.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 28017454 is about 5293.1516131696. The cubic root of 28017454 is about 303.7219800625.

The spelling of 28017454 in words is "twenty-eight million, seventeen thousand, four hundred fifty-four".