32681421 has 16 divisors (see below), whose sum is σ = 49213120. Its totient is φ = 21429360.

The previous prime is 32681401. The next prime is 32681477. The reversal of 32681421 is 12418623.

It is not a de Polignac number, because 32681421 - 2⁶ = 32681357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32681401) 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, 8275 + ... + 11568.

It is an arithmetic number, because the mean of its divisors is an integer number (3075820).

Almost surely, 2^32681421 is an apocalyptic number.

It is an amenable number.

32681421 is a deficient number, since it is larger than the sum of its proper divisors (16531699).

32681421 is a wasteful number, since it uses less digits than its factorization.

32681421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19913 (or 19907 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 32681421 is about 5716.7666560740. The cubic root of 32681421 is about 319.7179187350.

The spelling of 32681421 in words is "thirty-two million, six hundred eighty-one thousand, four hundred twenty-one".