18253428 has 12 divisors (see below), whose sum is σ = 42591360. Its totient is φ = 6084472.

The previous prime is 18253423. The next prime is 18253463. The reversal of 18253428 is 82435281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18253423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 760548 + ... + 760571.

It is an arithmetic number, because the mean of its divisors is an integer number (3549280).

Almost surely, 2^18253428 is an apocalyptic number.

It is an amenable number.

18253428 is an abundant number, since it is smaller than the sum of its proper divisors (24337932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18253428 is a wasteful number, since it uses less digits than its factorization.

18253428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521126 (or 1521124 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 18253428 is about 4272.4030708724. The cubic root of 18253428 is about 263.2983549474.

It can be divided in two parts, 18253 and 428, that added together give a palindrome (18681).

The spelling of 18253428 in words is "eighteen million, two hundred fifty-three thousand, four hundred twenty-eight".