18070028 has 12 divisors (see below), whose sum is σ = 31670520. Its totient is φ = 9021312.

The previous prime is 18070027. The next prime is 18070037. The reversal of 18070028 is 82007081.

It is a junction number, because it is equal to n+sod(n) for n = 18069979 and 18070006.

It is not an unprimeable number, because it can be changed into a prime (18070027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101 + ... + 6012.

It is an arithmetic number, because the mean of its divisors is an integer number (2639210).

Almost surely, 2^18070028 is an apocalyptic number.

It is an amenable number.

18070028 is a deficient number, since it is larger than the sum of its proper divisors (13600492).

18070028 is a wasteful number, since it uses less digits than its factorization.

18070028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856 (or 6854 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 18070028 is about 4250.8855547991. The cubic root of 18070028 is about 262.4135612600.

The spelling of 18070028 in words is "eighteen million, seventy thousand, twenty-eight".