32721427 has 2 divisors, whose sum is σ = 32721428. Its totient is φ = 32721426.

The previous prime is 32721419. The next prime is 32721463. The reversal of 32721427 is 72412723.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32721427 - 2³ = 32721419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 32721395 and 32721404.

It is not a weakly prime, because it can be changed into another prime (32721407) 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 as a sum of consecutive naturals, namely, 16360713 + 16360714.

It is an arithmetic number, because the mean of its divisors is an integer number (16360714).

Almost surely, 2^32721427 is an apocalyptic number.

32721427 is a deficient number, since it is larger than the sum of its proper divisors (1).

32721427 is an equidigital number, since it uses as much as digits as its factorization.

32721427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 28.

The square root of 32721427 is about 5720.2645917824. The cubic root of 32721427 is about 319.8483233005.

The spelling of 32721427 in words is "thirty-two million, seven hundred twenty-one thousand, four hundred twenty-seven".