28866494 has 4 divisors (see below), whose sum is σ = 43299744. Its totient is φ = 14433246.

The previous prime is 28866473. The next prime is 28866499. The reversal of 28866494 is 49466882.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7216622 + ... + 7216625.

It is an arithmetic number, because the mean of its divisors is an integer number (10824936).

Almost surely, 2^28866494 is an apocalyptic number.

28866494 is a deficient number, since it is larger than the sum of its proper divisors (14433250).

28866494 is a wasteful number, since it uses less digits than its factorization.

28866494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14433249.

The product of its digits is 663552, while the sum is 47.

The square root of 28866494 is about 5372.7547868854. The cubic root of 28866494 is about 306.7594943201.

The spelling of 28866494 in words is "twenty-eight million, eight hundred sixty-six thousand, four hundred ninety-four".