18070 has 16 divisors (see below), whose sum is σ = 35280. Its totient is φ = 6624.

The previous prime is 18061. The next prime is 18077. The reversal of 18070 is 7081.

18070 = 20² + 21² + ... + 39².

18070 is nontrivially palindromic in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18077) by changing a digit.

18070 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61 + ... + 199.

It is an arithmetic number, because the mean of its divisors is an integer number (2205).

2¹⁸⁰⁷⁰ is an apocalyptic number.

18070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18070 is a deficient number, since it is larger than the sum of its proper divisors (17210).

18070 is a wasteful number, since it uses less digits than its factorization.

18070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 18070 is about 134.4247001113. The cubic root of 18070 is about 26.2413425721.

The spelling of 18070 in words is "eighteen thousand, seventy".