28952143 has 16 divisors (see below), whose sum is σ = 33667200. Its totient is φ = 24619680.

The previous prime is 28952137. The next prime is 28952149. The reversal of 28952143 is 34125982.

It is an interprime number because it is at equal distance from previous prime (28952137) and next prime (28952149).

It is a cyclic number.

It is not a de Polignac number, because 28952143 - 2⁵ = 28952111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28952099 and 28952108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28952149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16513 + ... + 18181.

It is an arithmetic number, because the mean of its divisors is an integer number (2104200).

Almost surely, 2^28952143 is an apocalyptic number.

28952143 is a deficient number, since it is larger than the sum of its proper divisors (4715057).

28952143 is a wasteful number, since it uses less digits than its factorization.

28952143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782.

The product of its digits is 17280, while the sum is 34.

The square root of 28952143 is about 5380.7195615456. The cubic root of 28952143 is about 307.0625873733.

The spelling of 28952143 in words is "twenty-eight million, nine hundred fifty-two thousand, one hundred forty-three".