32878213 has 2 divisors, whose sum is σ = 32878214. Its totient is φ = 32878212.

The previous prime is 32878177. The next prime is 32878229. The reversal of 32878213 is 31287823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23648769 + 9229444 = 4863^2 + 3038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32878213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32878253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16439106 + 16439107.

It is an arithmetic number, because the mean of its divisors is an integer number (16439107).

Almost surely, 2^32878213 is an apocalyptic number.

It is an amenable number.

32878213 is a deficient number, since it is larger than the sum of its proper divisors (1).

32878213 is an equidigital number, since it uses as much as digits as its factorization.

32878213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 34.

The square root of 32878213 is about 5733.9526506591. The cubic root of 32878213 is about 320.3583647971.

The spelling of 32878213 in words is "thirty-two million, eight hundred seventy-eight thousand, two hundred thirteen".