32020745 has 8 divisors (see below), whose sum is σ = 39150216. Its totient is φ = 25133056.

The previous prime is 32020721. The next prime is 32020753. The reversal of 32020745 is 54702023.

It can be written as a sum of positive squares in 4 ways, for example, as 8128201 + 23892544 = 2851^2 + 4888^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 32020745 - 2²² = 27826441 is a prime.

It is a super-2 number, since 2×32020745² = 2050656220710050, which contains 22 as substring.

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 32020745.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60152 + ... + 60681.

It is an arithmetic number, because the mean of its divisors is an integer number (4893777).

Almost surely, 2^32020745 is an apocalyptic number.

It is an amenable number.

32020745 is a deficient number, since it is larger than the sum of its proper divisors (7129471).

32020745 is a wasteful number, since it uses less digits than its factorization.

32020745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120891.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 32020745 is about 5658.6875686859. The cubic root of 32020745 is about 317.5488010630.

Adding to 32020745 its reverse (54702023), we get a palindrome (86722768).

The spelling of 32020745 in words is "thirty-two million, twenty thousand, seven hundred forty-five".