18053072 has 40 divisors (see below), whose sum is σ = 36325800. Its totient is φ = 8686080.

The previous prime is 18053053. The next prime is 18053089. The reversal of 18053072 is 27035081.

It can be written as a sum of positive squares in 4 ways, for example, as 1860496 + 16192576 = 1364^2 + 4024^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51554 + ... + 51902.

It is an arithmetic number, because the mean of its divisors is an integer number (908145).

Almost surely, 2^18053072 is an apocalyptic number.

It is an amenable number.

18053072 is an abundant number, since it is smaller than the sum of its proper divisors (18272728).

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

18053072 is a wasteful number, since it uses less digits than its factorization.

18053072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 18053072 is about 4248.8906787537. The cubic root of 18053072 is about 262.3314570376.

Subtracting 18053072 from its reverse (27035081), we obtain a square (8982009 = 2997²).

The spelling of 18053072 in words is "eighteen million, fifty-three thousand, seventy-two".