28148533 has 8 divisors (see below), whose sum is σ = 32260352. Its totient is φ = 24059376.

The previous prime is 28148521. The next prime is 28148551. The reversal of 28148533 is 33584182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28148533 - 2¹⁷ = 28017461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148513) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2910 + ... + 8047.

It is an arithmetic number, because the mean of its divisors is an integer number (4032544).

Almost surely, 2^28148533 is an apocalyptic number.

It is an amenable number.

28148533 is a deficient number, since it is larger than the sum of its proper divisors (4111819).

28148533 is a wasteful number, since it uses less digits than its factorization.

28148533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11331.

The product of its digits is 23040, while the sum is 34.

The square root of 28148533 is about 5305.5191074955. The cubic root of 28148533 is about 304.1948953681.

The spelling of 28148533 in words is "twenty-eight million, one hundred forty-eight thousand, five hundred thirty-three".