18342870 has 64 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 3869568.

The previous prime is 18342869. The next prime is 18342871. The reversal of 18342870 is 7824381.

It is an interprime number because it is at equal distance from previous prime (18342869) and next prime (18342871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 630 + ... + 6089.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 2^18342870 is an apocalyptic number.

18342870 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 18342870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27095040).

18342870 is an abundant number, since it is smaller than the sum of its proper divisors (35847210).

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

18342870 is a wasteful number, since it uses less digits than its factorization.

18342870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 18342870 is about 4282.8576908415. The cubic root of 18342870 is about 263.7277093835.

The spelling of 18342870 in words is "eighteen million, three hundred forty-two thousand, eight hundred seventy".