28147042 has 16 divisors (see below), whose sum is σ = 52638912. Its totient is φ = 10966320.

The previous prime is 28147001. The next prime is 28147073. The reversal of 28147042 is 24074182.

It is a self number, because there is not a number n which added to its sum of digits gives 28147042.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91233 + ... + 91540.

It is an arithmetic number, because the mean of its divisors is an integer number (3289932).

Almost surely, 2^28147042 is an apocalyptic number.

28147042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28147042 is a deficient number, since it is larger than the sum of its proper divisors (24491870).

28147042 is a wasteful number, since it uses less digits than its factorization.

28147042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182793.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28147042 is about 5305.3785915804. The cubic root of 28147042 is about 304.1895243055.

The spelling of 28147042 in words is "twenty-eight million, one hundred forty-seven thousand, forty-two".