28051143 has 8 divisors (see below), whose sum is σ = 38412528. Its totient is φ = 18195264.

The previous prime is 28051141. The next prime is 28051147. The reversal of 28051143 is 34115082.

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

It is not a de Polignac number, because 28051143 - 2¹ = 28051141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28051141) 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, 126246 + ... + 126467.

It is an arithmetic number, because the mean of its divisors is an integer number (4801566).

Almost surely, 2^28051143 is an apocalyptic number.

28051143 is a deficient number, since it is larger than the sum of its proper divisors (10361385).

28051143 is a wasteful number, since it uses less digits than its factorization.

28051143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252753.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 28051143 is about 5296.3329766925. The cubic root of 28051143 is about 303.8436660111.

The spelling of 28051143 in words is "twenty-eight million, fifty-one thousand, one hundred forty-three".