28109050 has 12 divisors (see below), whose sum is σ = 52282926. Its totient is φ = 11243600.

The previous prime is 28109047. The next prime is 28109051. The reversal of 28109050 is 5090182.

It can be written as a sum of positive squares in 3 ways, for example, as 22363441 + 5745609 = 4729^2 + 2397^2 .

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 (28109051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281041 + ... + 281140.

Almost surely, 2^28109050 is an apocalyptic number.

28109050 is a deficient number, since it is larger than the sum of its proper divisors (24173876).

28109050 is a wasteful number, since it uses less digits than its factorization.

28109050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562193 (or 562188 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 28109050 is about 5301.7968652147. The cubic root of 28109050 is about 304.0526008357.

The spelling of 28109050 in words is "twenty-eight million, one hundred nine thousand, fifty".