32981421 has 8 divisors (see below), whose sum is σ = 47973024. Its totient is φ = 19988720.

The previous prime is 32981401. The next prime is 32981437. The reversal of 32981421 is 12418923.

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

It is a cyclic number.

It is not a de Polignac number, because 32981421 - 2⁷ = 32981293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32981401) 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, 499686 + ... + 499751.

It is an arithmetic number, because the mean of its divisors is an integer number (5996628).

Almost surely, 2^32981421 is an apocalyptic number.

It is an amenable number.

32981421 is a deficient number, since it is larger than the sum of its proper divisors (14991603).

32981421 is a wasteful number, since it uses less digits than its factorization.

32981421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999451.

The product of its digits is 3456, while the sum is 30.

The square root of 32981421 is about 5742.9453244829. The cubic root of 32981421 is about 320.6932269719.

The spelling of 32981421 in words is "thirty-two million, nine hundred eighty-one thousand, four hundred twenty-one".