28258042 has 8 divisors (see below), whose sum is σ = 42433632. Its totient is φ = 14113500.

The previous prime is 28258039. The next prime is 28258051. The reversal of 28258042 is 24085282.

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

It is a junction number, because it is equal to n+sod(n) for n = 28257995 and 28258013.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5334 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (5304204).

Almost surely, 2^28258042 is an apocalyptic number.

28258042 is a deficient number, since it is larger than the sum of its proper divisors (14175590).

28258042 is a wasteful number, since it uses less digits than its factorization.

28258042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15524.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 28258042 is about 5315.8293802567. The cubic root of 28258042 is about 304.5888646599.

The spelling of 28258042 in words is "twenty-eight million, two hundred fifty-eight thousand, forty-two".