18152072 has 8 divisors (see below), whose sum is σ = 34035150. Its totient is φ = 9076032.

The previous prime is 18152051. The next prime is 18152077. The reversal of 18152072 is 27025181.

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 7873636 = 3206^2 + 2806^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18152077) 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 as a sum of consecutive naturals, namely, 1134497 + ... + 1134512.

Almost surely, 2^18152072 is an apocalyptic number.

It is an amenable number.

18152072 is a deficient number, since it is larger than the sum of its proper divisors (15883078).

18152072 is a wasteful number, since it uses less digits than its factorization.

18152072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2269015 (or 2269011 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 18152072 is about 4260.5248502972. The cubic root of 18152072 is about 262.8101102951.

The spelling of 18152072 in words is "eighteen million, one hundred fifty-two thousand, seventy-two".