28259942 has 4 divisors (see below), whose sum is σ = 42389916. Its totient is φ = 14129970.

The previous prime is 28259929. The next prime is 28259953. The reversal of 28259942 is 24995282.

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 28259942.

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, 7064984 + ... + 7064987.

It is an arithmetic number, because the mean of its divisors is an integer number (10597479).

Almost surely, 2^28259942 is an apocalyptic number.

28259942 is a deficient number, since it is larger than the sum of its proper divisors (14129974).

28259942 is a wasteful number, since it uses less digits than its factorization.

28259942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14129973.

The product of its digits is 103680, while the sum is 41.

The square root of 28259942 is about 5316.0080887824. The cubic root of 28259942 is about 304.5956911045.

The spelling of 28259942 in words is "twenty-eight million, two hundred fifty-nine thousand, nine hundred forty-two".