18029450 has 12 divisors (see below), whose sum is σ = 33534870. Its totient is φ = 7211760.

The previous prime is 18029441. The next prime is 18029477. The reversal of 18029450 is 5492081.

It can be written as a sum of positive squares in 3 ways, for example, as 10582009 + 7447441 = 3253^2 + 2729^2 .

It is a super-2 number, since 2×18029450² = 650122134605000, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 180245 + ... + 180344.

Almost surely, 2^18029450 is an apocalyptic number.

18029450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18029450 is a deficient number, since it is larger than the sum of its proper divisors (15505420).

18029450 is a wasteful number, since it uses less digits than its factorization.

18029450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360601 (or 360596 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 18029450 is about 4246.1099844446. The cubic root of 18029450 is about 262.2169890137.

The spelling of 18029450 in words is "eighteen million, twenty-nine thousand, four hundred fifty".