18071382 has 32 divisors (see below), whose sum is σ = 41432832. Its totient is φ = 5147424.

The previous prime is 18071381. The next prime is 18071387. The reversal of 18071382 is 28317081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071381) 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, 24288 + ... + 25020.

It is an arithmetic number, because the mean of its divisors is an integer number (1294776).

Almost surely, 2^18071382 is an apocalyptic number.

18071382 is an abundant number, since it is smaller than the sum of its proper divisors (23361450).

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

18071382 is a wasteful number, since it uses less digits than its factorization.

18071382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18071382 is about 4251.0448127490. The cubic root of 18071382 is about 262.4201153743.

The spelling of 18071382 in words is "eighteen million, seventy-one thousand, three hundred eighty-two".