28028050 has 12 divisors (see below), whose sum is σ = 52132266. Its totient is φ = 11211200.

The previous prime is 28028029. The next prime is 28028057. The reversal of 28028050 is 5082082.

It can be written as a sum of positive squares in 3 ways, for example, as 18584721 + 9443329 = 4311^2 + 3073^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (28028057) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 280231 + ... + 280330.

Almost surely, 2^28028050 is an apocalyptic number.

28028050 is a deficient number, since it is larger than the sum of its proper divisors (24104216).

28028050 is a wasteful number, since it uses less digits than its factorization.

28028050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560573 (or 560568 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28028050 is about 5294.1524345262. The cubic root of 28028050 is about 303.7602637277.

The spelling of 28028050 in words is "twenty-eight million, twenty-eight thousand, fifty".