28343523 has 16 divisors (see below), whose sum is σ = 40893440. Its totient is φ = 17358624.

The previous prime is 28343507. The next prime is 28343537. The reversal of 28343523 is 32534382.

It is not a de Polignac number, because 28343523 - 2⁴ = 28343507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28343543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7068 + ... + 10326.

It is an arithmetic number, because the mean of its divisors is an integer number (2555840).

Almost surely, 2^28343523 is an apocalyptic number.

28343523 is a deficient number, since it is larger than the sum of its proper divisors (12549917).

28343523 is a wasteful number, since it uses less digits than its factorization.

28343523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498.

The product of its digits is 17280, while the sum is 30.

The square root of 28343523 is about 5323.8635407005. The cubic root of 28343523 is about 304.8956841146.

It can be divided in two parts, 2834352 and 3, that multiplied together give a 4-th power (8503056 = 54⁴).

The spelling of 28343523 in words is "twenty-eight million, three hundred forty-three thousand, five hundred twenty-three".