32004381 has 16 divisors (see below), whose sum is σ = 43352064. Its totient is φ = 20999664.

The previous prime is 32004367. The next prime is 32004383. The reversal of 32004381 is 18340023.

It is a happy number.

It is not a de Polignac number, because 32004381 - 2⁹ = 32003869 is a prime.

It is a super-2 number, since 2×32004381² = 2048560806386322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32004383) by changing a digit.

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, 63376 + ... + 63878.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^32004381 is an apocalyptic number.

It is an amenable number.

32004381 is a deficient number, since it is larger than the sum of its proper divisors (11347683).

32004381 is a wasteful number, since it uses less digits than its factorization.

32004381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 32004381 is about 5657.2414655908. The cubic root of 32004381 is about 317.4946980742.

It can be divided in two parts, 32004 and 381, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 32004381 in words is "thirty-two million, four thousand, three hundred eighty-one".