18353672 has 8 divisors (see below), whose sum is σ = 34413150. Its totient is φ = 9176832.

The previous prime is 18353633. The next prime is 18353681. The reversal of 18353672 is 27635381.

It can be written as a sum of positive squares in only one way, i.e., 14945956 + 3407716 = 3866^2 + 1846^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1147097 + ... + 1147112.

Almost surely, 2^18353672 is an apocalyptic number.

It is an amenable number.

18353672 is a deficient number, since it is larger than the sum of its proper divisors (16059478).

18353672 is a wasteful number, since it uses less digits than its factorization.

18353672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294215 (or 2294211 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 18353672 is about 4284.1185791245. The cubic root of 18353672 is about 263.7794684174.

The spelling of 18353672 in words is "eighteen million, three hundred fifty-three thousand, six hundred seventy-two".