28246143 has 8 divisors (see below), whose sum is σ = 38192256. Its totient is φ = 18565400.

The previous prime is 28246121. The next prime is 28246157. The reversal of 28246143 is 34164282.

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 28246143 - 2⁸ = 28245887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28246143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28286143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66093 + ... + 66518.

It is an arithmetic number, because the mean of its divisors is an integer number (4774032).

Almost surely, 2^28246143 is an apocalyptic number.

28246143 is a deficient number, since it is larger than the sum of its proper divisors (9946113).

28246143 is a wasteful number, since it uses less digits than its factorization.

28246143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132685.

The product of its digits is 9216, while the sum is 30.

The square root of 28246143 is about 5314.7100579430. The cubic root of 28246143 is about 304.5461061922.

The spelling of 28246143 in words is "twenty-eight million, two hundred forty-six thousand, one hundred forty-three".