28543042 has 8 divisors (see below), whose sum is σ = 46706832. Its totient is φ = 12974100.

The previous prime is 28543027. The next prime is 28543043. The reversal of 28543042 is 24034582.

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

It is a super-2 number, since 2×28543042² = 1629410493227528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28543042.

It is not an unprimeable number, because it can be changed into a prime (28543043) 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, 648684 + ... + 648727.

It is an arithmetic number, because the mean of its divisors is an integer number (5838354).

Almost surely, 2^28543042 is an apocalyptic number.

28543042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28543042 is a deficient number, since it is larger than the sum of its proper divisors (18163790).

28543042 is a wasteful number, since it uses less digits than its factorization.

28543042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297424.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 28543042 is about 5342.5688577687. The cubic root of 28543042 is about 305.6094309311.

It can be divided in two parts, 2854 and 3042, that multiplied together give a palindrome (8681868).

The spelling of 28543042 in words is "twenty-eight million, five hundred forty-three thousand, forty-two".