28416243 has 8 divisors (see below), whose sum is σ = 39110656. Its totient is φ = 18333000.

The previous prime is 28416217. The next prime is 28416251. The reversal of 28416243 is 34261482.

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

It is not a de Polignac number, because 28416243 - 2⁸ = 28415987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28416243.

It is not an unprimeable number, because it can be changed into a prime (28416203) 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, 152683 + ... + 152868.

It is an arithmetic number, because the mean of its divisors is an integer number (4888832).

Almost surely, 2^28416243 is an apocalyptic number.

28416243 is a deficient number, since it is larger than the sum of its proper divisors (10694413).

28416243 is a wasteful number, since it uses less digits than its factorization.

28416243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305585.

The product of its digits is 9216, while the sum is 30.

The square root of 28416243 is about 5330.6887922669. The cubic root of 28416243 is about 305.1562148790.

The spelling of 28416243 in words is "twenty-eight million, four hundred sixteen thousand, two hundred forty-three".