28550338 has 8 divisors (see below), whose sum is σ = 43736832. Its totient is φ = 13971396.

The previous prime is 28550317. The next prime is 28550339. The reversal of 28550338 is 83305582.

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

It is not an unprimeable number, because it can be changed into a prime (28550339) 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, 151770 + ... + 151957.

It is an arithmetic number, because the mean of its divisors is an integer number (5467104).

Almost surely, 2^28550338 is an apocalyptic number.

28550338 is a deficient number, since it is larger than the sum of its proper divisors (15186494).

28550338 is a wasteful number, since it uses less digits than its factorization.

28550338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303776.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 28550338 is about 5343.2516317314. The cubic root of 28550338 is about 305.6354680584.

The spelling of 28550338 in words is "twenty-eight million, five hundred fifty thousand, three hundred thirty-eight".