28562743 has 4 divisors (see below), whose sum is σ = 31159368. Its totient is φ = 25966120.

The previous prime is 28562741. The next prime is 28562753. The reversal of 28562743 is 34726582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28562743 - 2¹ = 28562741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28562741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298296 + ... + 1298317.

It is an arithmetic number, because the mean of its divisors is an integer number (7789842).

Almost surely, 2^28562743 is an apocalyptic number.

28562743 is a deficient number, since it is larger than the sum of its proper divisors (2596625).

28562743 is a wasteful number, since it uses less digits than its factorization.

28562743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2596624.

The product of its digits is 80640, while the sum is 37.

The square root of 28562743 is about 5344.4123156807. The cubic root of 28562743 is about 305.6797274176.

The spelling of 28562743 in words is "twenty-eight million, five hundred sixty-two thousand, seven hundred forty-three".