28138050 has 96 divisors (see below), whose sum is σ = 81691200. Its totient is φ = 7102080.

The previous prime is 28138037. The next prime is 28138063. The reversal of 28138050 is 5083182.

It is a happy number.

28138050 is a `hidden beast` number, since 281 + 380 + 5 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (28138037) and next prime (28138063).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25102 + ... + 26198.

It is an arithmetic number, because the mean of its divisors is an integer number (850950).

Almost surely, 2^28138050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28138050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40845600).

28138050 is an abundant number, since it is smaller than the sum of its proper divisors (53553150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28138050 is a wasteful number, since it uses less digits than its factorization.

28138050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 28138050 is about 5304.5310820090. The cubic root of 28138050 is about 304.1571282011.

The spelling of 28138050 in words is "twenty-eight million, one hundred thirty-eight thousand, fifty".