18028514 has 8 divisors (see below), whose sum is σ = 30906048. Its totient is φ = 7726500.

The previous prime is 18028499. The next prime is 18028519. The reversal of 18028514 is 41582081.

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

It is not an unprimeable number, because it can be changed into a prime (18028519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643862 + ... + 643889.

It is an arithmetic number, because the mean of its divisors is an integer number (3863256).

Almost surely, 2^18028514 is an apocalyptic number.

18028514 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18028514 is a deficient number, since it is larger than the sum of its proper divisors (12877534).

18028514 is a wasteful number, since it uses less digits than its factorization.

18028514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287760.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 18028514 is about 4245.9997644842. Note that the first 3 decimals coincide. The cubic root of 18028514 is about 262.2124512649.

The spelling of 18028514 in words is "eighteen million, twenty-eight thousand, five hundred fourteen".