28160143 has 8 divisors (see below), whose sum is σ = 32527440. Its totient is φ = 24094080.

The previous prime is 28160137. The next prime is 28160173. The reversal of 28160143 is 34106182.

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 28160143 - 2¹³ = 28151951 is a prime.

It is a super-3 number, since 3×28160143³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28160173) 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, 75108 + ... + 75481.

It is an arithmetic number, because the mean of its divisors is an integer number (4065930).

Almost surely, 2^28160143 is an apocalyptic number.

28160143 is a deficient number, since it is larger than the sum of its proper divisors (4367297).

28160143 is a wasteful number, since it uses less digits than its factorization.

28160143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150617.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 28160143 is about 5306.6131383397. The cubic root of 28160143 is about 304.2367118432.

The spelling of 28160143 in words is "twenty-eight million, one hundred sixty thousand, one hundred forty-three".