28569454 has 4 divisors (see below), whose sum is σ = 42854184. Its totient is φ = 14284726.

The previous prime is 28569449. The next prime is 28569461. The reversal of 28569454 is 45496582.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28569454.

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, 7142362 + ... + 7142365.

It is an arithmetic number, because the mean of its divisors is an integer number (10713546).

Almost surely, 2^28569454 is an apocalyptic number.

28569454 is a deficient number, since it is larger than the sum of its proper divisors (14284730).

28569454 is a wasteful number, since it uses less digits than its factorization.

28569454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14284729.

The product of its digits is 345600, while the sum is 43.

The square root of 28569454 is about 5345.0401308129. The cubic root of 28569454 is about 305.7036660149.

The spelling of 28569454 in words is "twenty-eight million, five hundred sixty-nine thousand, four hundred fifty-four".