28971454 has 4 divisors (see below), whose sum is σ = 43457184. Its totient is φ = 14485726.

The previous prime is 28971413. The next prime is 28971463. The reversal of 28971454 is 45417982.

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

It is a Smith number, since the sum of its digits (40) 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 polite number, since it can be written as a sum of consecutive naturals, namely, 7242862 + ... + 7242865.

It is an arithmetic number, because the mean of its divisors is an integer number (10864296).

Almost surely, 2^28971454 is an apocalyptic number.

28971454 is a deficient number, since it is larger than the sum of its proper divisors (14485730).

28971454 is a wasteful number, since it uses less digits than its factorization.

28971454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14485729.

The product of its digits is 80640, while the sum is 40.

The square root of 28971454 is about 5382.5137250173. The cubic root of 28971454 is about 307.1308421682.

The spelling of 28971454 in words is "twenty-eight million, nine hundred seventy-one thousand, four hundred fifty-four".