28178150 has 96 divisors (see below), whose sum is σ = 70495488. Its totient is φ = 8092800.

The previous prime is 28178149. The next prime is 28178153. The reversal of 28178150 is 5187182.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28178153) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 49769 + ... + 50331.

It is an arithmetic number, because the mean of its divisors is an integer number (734328).

Almost surely, 2^28178150 is an apocalyptic number.

28178150 is an abundant number, since it is smaller than the sum of its proper divisors (42317338).

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

28178150 is a wasteful number, since it uses less digits than its factorization.

28178150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 601 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 28178150 is about 5308.3095237561. The cubic root of 28178150 is about 304.3015460685.

The spelling of 28178150 in words is "twenty-eight million, one hundred seventy-eight thousand, one hundred fifty".