32328381 has 16 divisors (see below), whose sum is σ = 44812800. Its totient is φ = 20708160.

The previous prime is 32328379. The next prime is 32328421. The reversal of 32328381 is 18382323.

It is not a de Polignac number, because 32328381 - 2¹ = 32328379 is a prime.

It is a super-2 number, since 2×32328381² = 2090248436162322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32328281) 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, 12691 + ... + 15023.

It is an arithmetic number, because the mean of its divisors is an integer number (2800800).

Almost surely, 2^32328381 is an apocalyptic number.

32328381 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32328381 is a deficient number, since it is larger than the sum of its proper divisors (12484419).

32328381 is a wasteful number, since it uses less digits than its factorization.

32328381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2516.

The product of its digits is 6912, while the sum is 30.

The square root of 32328381 is about 5685.8052200194. The cubic root of 32328381 is about 318.5625007241.

The spelling of 32328381 in words is "thirty-two million, three hundred twenty-eight thousand, three hundred eighty-one".