28152243 has 48 divisors (see below), whose sum is σ = 50668800. Its totient is φ = 14696640.

The previous prime is 28152239. The next prime is 28152251. The reversal of 28152243 is 34225182.

It is not a de Polignac number, because 28152243 - 2² = 28152239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34308 + ... + 35118.

It is an arithmetic number, because the mean of its divisors is an integer number (1055600).

Almost surely, 2^28152243 is an apocalyptic number.

28152243 is a deficient number, since it is larger than the sum of its proper divisors (22516557).

28152243 is a wasteful number, since it uses less digits than its factorization.

28152243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 869 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28152243 is about 5305.8687318855. The cubic root of 28152243 is about 304.2082591608.

The spelling of 28152243 in words is "twenty-eight million, one hundred fifty-two thousand, two hundred forty-three".