28072342 has 8 divisors (see below), whose sum is σ = 42277032. Its totient is φ = 13980000.

The previous prime is 28072339. The next prime is 28072361. The reversal of 28072342 is 24327082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28072342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27459 + ... + 28462.

It is an arithmetic number, because the mean of its divisors is an integer number (5284629).

Almost surely, 2^28072342 is an apocalyptic number.

28072342 is a deficient number, since it is larger than the sum of its proper divisors (14204690).

28072342 is a wasteful number, since it uses less digits than its factorization.

28072342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56174.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28072342 is about 5298.3338890636. Note that the first 3 decimals coincide. The cubic root of 28072342 is about 303.9201876697.

The spelling of 28072342 in words is "twenty-eight million, seventy-two thousand, three hundred forty-two".