28539038 has 8 divisors (see below), whose sum is σ = 46700280. Its totient is φ = 12972280.

The previous prime is 28539037. The next prime is 28539053. The reversal of 28539038 is 83093582.

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 = 28538992 and 28539010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28539031) 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, 648593 + ... + 648636.

It is an arithmetic number, because the mean of its divisors is an integer number (5837535).

Almost surely, 2^28539038 is an apocalyptic number.

28539038 is a deficient number, since it is larger than the sum of its proper divisors (18161242).

28539038 is a wasteful number, since it uses less digits than its factorization.

28539038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297242.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 28539038 is about 5342.1941185247. The cubic root of 28539038 is about 305.5951400299.

The spelling of 28539038 in words is "twenty-eight million, five hundred thirty-nine thousand, thirty-eight".