28896750 has 80 divisors (see below), whose sum is σ = 80864784. Its totient is φ = 7700400.

The previous prime is 28896733. The next prime is 28896761. The reversal of 28896750 is 5769882.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28896696 and 28896705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19537 + ... + 20963.

Almost surely, 2^28896750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28896750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40432392).

28896750 is an abundant number, since it is smaller than the sum of its proper divisors (51968034).

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

28896750 is a wasteful number, since it uses less digits than its factorization.

28896750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28896750 is about 5375.5697372465. The cubic root of 28896750 is about 306.8666320794.

It can be divided in two parts, 28896 and 750, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 28896750 in words is "twenty-eight million, eight hundred ninety-six thousand, seven hundred fifty".