18028534 has 8 divisors (see below), whose sum is σ = 28633608. Its totient is φ = 8484000.

The previous prime is 18028529. The next prime is 18028541. The reversal of 18028534 is 43582081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18028496 and 18028505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265092 + ... + 265159.

It is an arithmetic number, because the mean of its divisors is an integer number (3579201).

Almost surely, 2^18028534 is an apocalyptic number.

18028534 is a deficient number, since it is larger than the sum of its proper divisors (10605074).

18028534 is a wasteful number, since it uses less digits than its factorization.

18028534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530270.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 18028534 is about 4246.0021196415. The cubic root of 18028534 is about 262.2125482270.

The spelling of 18028534 in words is "eighteen million, twenty-eight thousand, five hundred thirty-four".