28911152 has 20 divisors (see below), whose sum is σ = 59310936. Its totient is φ = 13605120.

The previous prime is 28911137. The next prime is 28911187. The reversal of 28911152 is 25111982.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 52874 + ... + 53417.

Almost surely, 2^28911152 is an apocalyptic number.

It is an amenable number.

28911152 is an abundant number, since it is smaller than the sum of its proper divisors (30399784).

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

28911152 is a wasteful number, since it uses less digits than its factorization.

28911152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106316 (or 106310 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 28911152 is about 5376.9091493162. The cubic root of 28911152 is about 306.9176038925.

The spelling of 28911152 in words is "twenty-eight million, nine hundred eleven thousand, one hundred fifty-two".