28581150 has 48 divisors (see below), whose sum is σ = 76338864. Its totient is φ = 7034880.

The previous prime is 28581143. The next prime is 28581169. The reversal of 28581150 is 5118582.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5379 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (1590393).

Almost surely, 2^28581150 is an apocalyptic number.

28581150 is an abundant number, since it is smaller than the sum of its proper divisors (47757714).

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

28581150 is a wasteful number, since it uses less digits than its factorization.

28581150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14685 (or 14680 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 28581150 is about 5346.1341172851. The cubic root of 28581150 is about 305.7453774907.

The spelling of 28581150 in words is "twenty-eight million, five hundred eighty-one thousand, one hundred fifty".