28043494 has 8 divisors (see below), whose sum is σ = 42169320. Its totient is φ = 13987056.

The previous prime is 28043471. The next prime is 28043507. The reversal of 28043494 is 49434082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16324 + ... + 17959.

It is an arithmetic number, because the mean of its divisors is an integer number (5271165).

Almost surely, 2^28043494 is an apocalyptic number.

28043494 is a deficient number, since it is larger than the sum of its proper divisors (14125826).

28043494 is a wasteful number, since it uses less digits than its factorization.

28043494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34694.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 28043494 is about 5295.6108240693. The cubic root of 28043494 is about 303.8160460852.

The spelling of 28043494 in words is "twenty-eight million, forty-three thousand, four hundred ninety-four".