28027550 has 12 divisors (see below), whose sum is σ = 52131336. Its totient is φ = 11211000.

The previous prime is 28027511. The next prime is 28027561. The reversal of 28027550 is 5572082.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280226 + ... + 280325.

It is an arithmetic number, because the mean of its divisors is an integer number (4344278).

Almost surely, 2^28027550 is an apocalyptic number.

28027550 is a deficient number, since it is larger than the sum of its proper divisors (24103786).

28027550 is a wasteful number, since it uses less digits than its factorization.

28027550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560563 (or 560558 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 28027550 is about 5294.1052124037. The cubic root of 28027550 is about 303.7584574296.

The spelling of 28027550 in words is "twenty-eight million, twenty-seven thousand, five hundred fifty".