18207070 has 32 divisors (see below), whose sum is σ = 38750400. Its totient is φ = 6026496.

The previous prime is 18207047. The next prime is 18207089. The reversal of 18207070 is 7070281.

It is a happy number.

18207070 is a modest number, since divided by 7070 gives 1820 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2455 + ... + 6514.

It is an arithmetic number, because the mean of its divisors is an integer number (1210950).

Almost surely, 2^18207070 is an apocalyptic number.

18207070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18207070 is an abundant number, since it is smaller than the sum of its proper divisors (20543330).

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

18207070 is a wasteful number, since it uses less digits than its factorization.

18207070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 18207070 is about 4266.9743378652. The cubic root of 18207070 is about 263.0752674837.

It can be divided in two parts, 182070 and 70, that multiplied together give a square (12744900 = 3570²).

The spelling of 18207070 in words is "eighteen million, two hundred seven thousand, seventy".