28074750 has 128 divisors (see below), whose sum is σ = 79252992. Its totient is φ = 6560000.

The previous prime is 28074733. The next prime is 28074751. The reversal of 28074750 is 5747082.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 338209 + ... + 338291.

It is an arithmetic number, because the mean of its divisors is an integer number (619164).

Almost surely, 2^28074750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28074750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39626496).

28074750 is an abundant number, since it is smaller than the sum of its proper divisors (51178242).

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

28074750 is a wasteful number, since it uses less digits than its factorization.

28074750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 28074750 is about 5298.5611254377. The cubic root of 28074750 is about 303.9288773483.

It can be divided in two parts, 2807 and 4750, that added together give a palindrome (7557).

The spelling of 28074750 in words is "twenty-eight million, seventy-four thousand, seven hundred fifty".