28497938 has 8 divisors (see below), whose sum is σ = 48853632. Its totient is φ = 12213396.

The previous prime is 28497901. The next prime is 28497947. The reversal of 28497938 is 83979482.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017770 + ... + 1017797.

It is an arithmetic number, because the mean of its divisors is an integer number (6106704).

Almost surely, 2^28497938 is an apocalyptic number.

28497938 is a deficient number, since it is larger than the sum of its proper divisors (20355694).

28497938 is a wasteful number, since it uses less digits than its factorization.

28497938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035576.

The product of its digits is 870912, while the sum is 50.

The square root of 28497938 is about 5338.3459985280. The cubic root of 28497938 is about 305.4483703733.

The spelling of 28497938 in words is "twenty-eight million, four hundred ninety-seven thousand, nine hundred thirty-eight".