28180150 has 24 divisors (see below), whose sum is σ = 52590384. Its totient is φ = 11234400.

The previous prime is 28180121. The next prime is 28180151. The reversal of 28180150 is 5108182.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28180151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17895 + ... + 19405.

It is an arithmetic number, because the mean of its divisors is an integer number (2191266).

Almost surely, 2^28180150 is an apocalyptic number.

28180150 is a deficient number, since it is larger than the sum of its proper divisors (24410234).

28180150 is a wasteful number, since it uses less digits than its factorization.

28180150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 28180150 is about 5308.4979043040. The cubic root of 28180150 is about 304.3087453664.

The spelling of 28180150 in words is "twenty-eight million, one hundred eighty thousand, one hundred fifty".