32364721 has 3 divisors (see below), whose sum is σ = 32370411. Its totient is φ = 32359032.

The previous prime is 32364707. The next prime is 32364727. The reversal of 32364721 is 12746323.

The square root of 32364721 is 5689.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12746323 = 2129 ⋅5987.

It can be written as a sum of positive squares in only one way, i.e., 30924721 + 1440000 = 5561^2 + 1200^2 .

It is a de Polignac number, because none of the positive numbers 2^k-32364721 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32364721.

It is not an unprimeable number, because it can be changed into a prime (32364727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2845 + ... + 8533.

It is an arithmetic number, because the mean of its divisors is an integer number (10790137).

Almost surely, 2^32364721 is an apocalyptic number.

32364721 is the 5689-th square number.

32364721 is the 2845-th centered octagonal number.

It is an amenable number.

32364721 is a deficient number, since it is larger than the sum of its proper divisors (5690).

32364721 is an frugal number, since it uses more digits than its factorization.

32364721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11378 (or 5689 counting only the distinct ones).

The product of its digits is 6048, while the sum is 28.

The cubic root of 32364721 is about 318.6818203016.

The spelling of 32364721 in words is "thirty-two million, three hundred sixty-four thousand, seven hundred twenty-one".