18126870 has 32 divisors (see below), whose sum is σ = 43918848. Its totient is φ = 4787808.

The previous prime is 18126869. The next prime is 18126877. The reversal of 18126870 is 7862181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18126877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387 + ... + 6033.

It is an arithmetic number, because the mean of its divisors is an integer number (1372464).

Almost surely, 2^18126870 is an apocalyptic number.

18126870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18126870 is an abundant number, since it is smaller than the sum of its proper divisors (25791978).

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

18126870 is a wasteful number, since it uses less digits than its factorization.

18126870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764.

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 18126870 is about 4257.5662061793. The cubic root of 18126870 is about 262.6884270697.

The spelling of 18126870 in words is "eighteen million, one hundred twenty-six thousand, eight hundred seventy".