28148268 has 24 divisors (see below), whose sum is σ = 67455472. Its totient is φ = 9129024.

The previous prime is 28148261. The next prime is 28148303. The reversal of 28148268 is 86284182.

It is not an unprimeable number, because it can be changed into a prime (28148261) 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 7 ways as a sum of consecutive naturals, for example, 31255 + ... + 32142.

Almost surely, 2^28148268 is an apocalyptic number.

It is an amenable number.

28148268 is an abundant number, since it is smaller than the sum of its proper divisors (39307204).

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

28148268 is a wasteful number, since it uses less digits than its factorization.

28148268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63441 (or 63439 counting only the distinct ones).

The product of its digits is 49152, while the sum is 39.

The square root of 28148268 is about 5305.4941334432. The cubic root of 28148268 is about 304.1939407665.

The spelling of 28148268 in words is "twenty-eight million, one hundred forty-eight thousand, two hundred sixty-eight".