32016381 has 8 divisors (see below), whose sum is σ = 43681440. Its totient is φ = 20847792.

The previous prime is 32016373. The next prime is 32016401. The reversal of 32016381 is 18361023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32016381 - 2³ = 32016373 is a prime.

It is a super-2 number, since 2×32016381² = 2050097304674322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32016301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123966 + ... + 124223.

It is an arithmetic number, because the mean of its divisors is an integer number (5460180).

Almost surely, 2^32016381 is an apocalyptic number.

It is an amenable number.

32016381 is a deficient number, since it is larger than the sum of its proper divisors (11665059).

32016381 is a wasteful number, since it uses less digits than its factorization.

32016381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248235.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 32016381 is about 5658.3019537667. The cubic root of 32016381 is about 317.5343745204.

The spelling of 32016381 in words is "thirty-two million, sixteen thousand, three hundred eighty-one".