18029824 has 18 divisors (see below), whose sum is σ = 35989730. Its totient is φ = 9014784.

The previous prime is 18029801. The next prime is 18029833. The reversal of 18029824 is 42892081.

It can be written as a sum of positive squares in only one way, i.e., 15366400 + 2663424 = 3920^2 + 1632^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18029824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34959 + ... + 35470.

Almost surely, 2^18029824 is an apocalyptic number.

It is an amenable number.

18029824 is a deficient number, since it is larger than the sum of its proper divisors (17959906).

18029824 is an frugal number, since it uses more digits than its factorization.

18029824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70445 (or 70431 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 18029824 is about 4246.1540245262. The cubic root of 18029824 is about 262.2188021302.

The spelling of 18029824 in words is "eighteen million, twenty-nine thousand, eight hundred twenty-four".