28031150 has 36 divisors (see below), whose sum is σ = 59797512. Its totient is φ = 9576720.

The previous prime is 28031149. The next prime is 28031153. The reversal of 28031150 is 5113082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28031153) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 98909 + ... + 99191.

It is an arithmetic number, because the mean of its divisors is an integer number (1661042).

Almost surely, 2^28031150 is an apocalyptic number.

28031150 is an abundant number, since it is smaller than the sum of its proper divisors (31766362).

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

28031150 is an equidigital number, since it uses as much as digits as its factorization.

28031150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 28031150 is about 5294.4452022851. The cubic root of 28031150 is about 303.7714622960.

The spelling of 28031150 in words is "twenty-eight million, thirty-one thousand, one hundred fifty".