18070120 has 16 divisors (see below), whose sum is σ = 40657860. Its totient is φ = 7228032.

The previous prime is 18070109. The next prime is 18070123. The reversal of 18070120 is 2107081.

It can be written as a sum of positive squares in 2 ways, for example, as 16467364 + 1602756 = 4058^2 + 1266^2 .

It is not an unprimeable number, because it can be changed into a prime (18070123) 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, 225837 + ... + 225916.

Almost surely, 2^18070120 is an apocalyptic number.

18070120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18070120 is an abundant number, since it is smaller than the sum of its proper divisors (22587740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18070120 is a wasteful number, since it uses less digits than its factorization.

18070120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451764 (or 451760 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 18070120 is about 4250.8963760600. The cubic root of 18070120 is about 262.4140066016.

The spelling of 18070120 in words is "eighteen million, seventy thousand, one hundred twenty".