28243342 has 16 divisors (see below), whose sum is σ = 43704864. Its totient is φ = 13680000.

The previous prime is 28243339. The next prime is 28243343. The reversal of 28243342 is 24334282.

It is a self number, because there is not a number n which added to its sum of digits gives 28243342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28243343) 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, 11242 + ... + 13522.

It is an arithmetic number, because the mean of its divisors is an integer number (2731554).

Almost surely, 2^28243342 is an apocalyptic number.

28243342 is a deficient number, since it is larger than the sum of its proper divisors (15461522).

28243342 is a wasteful number, since it uses less digits than its factorization.

28243342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475.

The product of its digits is 9216, while the sum is 28.

The square root of 28243342 is about 5314.4465375051. The cubic root of 28243342 is about 304.5360391913.

The spelling of 28243342 in words is "twenty-eight million, two hundred forty-three thousand, three hundred forty-two".