32478913 has 2 divisors, whose sum is σ = 32478914. Its totient is φ = 32478912.

The previous prime is 32478911. The next prime is 32478937. The reversal of 32478913 is 31987423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32455809 + 23104 = 5697^2 + 152^2 .

It is a cyclic number.

It is not a de Polignac number, because 32478913 - 2¹ = 32478911 is a prime.

Together with 32478911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32478911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16239456 + 16239457.

It is an arithmetic number, because the mean of its divisors is an integer number (16239457).

Almost surely, 2^32478913 is an apocalyptic number.

It is an amenable number.

32478913 is a deficient number, since it is larger than the sum of its proper divisors (1).

32478913 is an equidigital number, since it uses as much as digits as its factorization.

32478913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 32478913 is about 5699.0273731576. The cubic root of 32478913 is about 319.0561805907.

The spelling of 32478913 in words is "thirty-two million, four hundred seventy-eight thousand, nine hundred thirteen".