28366454 has 4 divisors (see below), whose sum is σ = 42549684. Its totient is φ = 14183226.

The previous prime is 28366441. The next prime is 28366463. The reversal of 28366454 is 45466382.

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

It is a Curzon 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, 7091612 + ... + 7091615.

It is an arithmetic number, because the mean of its divisors is an integer number (10637421).

Almost surely, 2^28366454 is an apocalyptic number.

28366454 is a deficient number, since it is larger than the sum of its proper divisors (14183230).

28366454 is a wasteful number, since it uses less digits than its factorization.

28366454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14183229.

The product of its digits is 138240, while the sum is 38.

The square root of 28366454 is about 5326.0167104507. The cubic root of 28366454 is about 304.9778860613.

The spelling of 28366454 in words is "twenty-eight million, three hundred sixty-six thousand, four hundred fifty-four".