28442006 has 8 divisors (see below), whose sum is σ = 43655304. Its totient is φ = 13890240.

The previous prime is 28441981. The next prime is 28442009. The reversal of 28442006 is 60024482.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165275 + ... + 165446.

It is an arithmetic number, because the mean of its divisors is an integer number (5456913).

Almost surely, 2^28442006 is an apocalyptic number.

28442006 is a deficient number, since it is larger than the sum of its proper divisors (15213298).

28442006 is a wasteful number, since it uses less digits than its factorization.

28442006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330766.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 28442006 is about 5333.1047242671. The cubic root of 28442006 is about 305.2484082168.

Adding to 28442006 its reverse (60024482), we get a palindrome (88466488).

The spelling of 28442006 in words is "twenty-eight million, four hundred forty-two thousand, six".