28494442 has 16 divisors (see below), whose sum is σ = 43640064. Its totient is φ = 13950000.

The previous prime is 28494439. The next prime is 28494451. The reversal of 28494442 is 24449482.

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 7 ways as a sum of consecutive naturals, for example, 37567 + ... + 38317.

It is an arithmetic number, because the mean of its divisors is an integer number (2727504).

Almost surely, 2^28494442 is an apocalyptic number.

28494442 is a deficient number, since it is larger than the sum of its proper divisors (15145622).

28494442 is a wasteful number, since it uses less digits than its factorization.

28494442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125.

The product of its digits is 73728, while the sum is 37.

The square root of 28494442 is about 5338.0185462398. The cubic root of 28494442 is about 305.4358795143.

The spelling of 28494442 in words is "twenty-eight million, four hundred ninety-four thousand, four hundred forty-two".