18162028 has 6 divisors (see below), whose sum is σ = 31783556. Its totient is φ = 9081012.

The previous prime is 18162007. The next prime is 18162031. The reversal of 18162028 is 82026181.

It is a super-2 number, since 2×18162028² = 659718522145568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18161987 and 18162005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270250 + ... + 2270257.

Almost surely, 2^18162028 is an apocalyptic number.

It is an amenable number.

18162028 is a deficient number, since it is larger than the sum of its proper divisors (13621528).

18162028 is a wasteful number, since it uses less digits than its factorization.

18162028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540511 (or 4540509 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 18162028 is about 4261.6930907798. The cubic root of 18162028 is about 262.8581499759.

It can be divided in two parts, 1816 and 2028, that added together give a square (3844 = 62²).

The spelling of 18162028 in words is "eighteen million, one hundred sixty-two thousand, twenty-eight".