28161152 has 16 divisors (see below), whose sum is σ = 56102550. Its totient is φ = 14080512.

The previous prime is 28161151. The next prime is 28161167. The reversal of 28161152 is 25116182.

It can be written as a sum of positive squares in only one way, i.e., 26460736 + 1700416 = 5144^2 + 1304^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (28161151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109877 + ... + 110132.

Almost surely, 2^28161152 is an apocalyptic number.

It is an amenable number.

28161152 is a deficient number, since it is larger than the sum of its proper divisors (27941398).

28161152 is an equidigital number, since it uses as much as digits as its factorization.

28161152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220023 (or 220011 counting only the distinct ones).

The product of its digits is 960, while the sum is 26.

The square root of 28161152 is about 5306.7082075426. The cubic root of 28161152 is about 304.2403454798.

The spelling of 28161152 in words is "twenty-eight million, one hundred sixty-one thousand, one hundred fifty-two".