28150155 has 96 divisors (see below), whose sum is σ = 57620160. Its totient is φ = 12579840.

The previous prime is 28150121. The next prime is 28150163. The reversal of 28150155 is 55105182.

It is not a de Polignac number, because 28150155 - 2⁷ = 28150027 is a prime.

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 95 ways as a sum of consecutive naturals, for example, 531109 + ... + 531161.

It is an arithmetic number, because the mean of its divisors is an integer number (600210).

Almost surely, 2^28150155 is an apocalyptic number.

28150155 is an abundant number, since it is smaller than the sum of its proper divisors (29470005).

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

28150155 is a wasteful number, since it uses less digits than its factorization.

28150155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 28150155 is about 5305.6719649824. The cubic root of 28150155 is about 304.2007381195.

The spelling of 28150155 in words is "twenty-eight million, one hundred fifty thousand, one hundred fifty-five".