18242070 has 128 divisors (see below), whose sum is σ = 55987200. Its totient is φ = 3694080.

The previous prime is 18242057. The next prime is 18242083. The reversal of 18242070 is 7024281.

It is an interprime number because it is at equal distance from previous prime (18242057) and next prime (18242083).

It is a self number, because there is not a number n which added to its sum of digits gives 18242070.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 122356 + ... + 122504.

It is an arithmetic number, because the mean of its divisors is an integer number (437400).

Almost surely, 2^18242070 is an apocalyptic number.

18242070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18242070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27993600).

18242070 is an abundant number, since it is smaller than the sum of its proper divisors (37745130).

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

18242070 is a wasteful number, since it uses less digits than its factorization.

18242070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 18242070 is about 4271.0736355160. The cubic root of 18242070 is about 263.2437320896.

The spelling of 18242070 in words is "eighteen million, two hundred forty-two thousand, seventy".