28148164 has 12 divisors (see below), whose sum is σ = 53737488. Its totient is φ = 12794600.

The previous prime is 28148161. The next prime is 28148167. The reversal of 28148164 is 46184182.

It is an interprime number because it is at equal distance from previous prime (28148161) and next prime (28148167).

It is not an unprimeable number, because it can be changed into a prime (28148161) 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 in 3 ways as a sum of consecutive naturals, for example, 319822 + ... + 319909.

It is an arithmetic number, because the mean of its divisors is an integer number (4478124).

Almost surely, 2^28148164 is an apocalyptic number.

It is an amenable number.

28148164 is a deficient number, since it is larger than the sum of its proper divisors (25589324).

28148164 is a wasteful number, since it uses less digits than its factorization.

28148164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639746 (or 639744 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 28148164 is about 5305.4843322735. The cubic root of 28148164 is about 304.1935661288.

The spelling of 28148164 in words is "twenty-eight million, one hundred forty-eight thousand, one hundred sixty-four".