32928145 has 4 divisors (see below), whose sum is σ = 39513780. Its totient is φ = 26342512.

The previous prime is 32928143. The next prime is 32928149. The reversal of 32928145 is 54182923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54182923 = 1229 ⋅44087.

It can be written as a sum of positive squares in 2 ways, for example, as 4016016 + 28912129 = 2004^2 + 5377^2 .

It is a cyclic number.

It is not a de Polignac number, because 32928145 - 2¹ = 32928143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32928145.

It is not an unprimeable number, because it can be changed into a prime (32928143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292810 + ... + 3292819.

It is an arithmetic number, because the mean of its divisors is an integer number (9878445).

Almost surely, 2^32928145 is an apocalyptic number.

It is an amenable number.

32928145 is a deficient number, since it is larger than the sum of its proper divisors (6585635).

32928145 is an equidigital number, since it uses as much as digits as its factorization.

32928145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6585634.

The product of its digits is 17280, while the sum is 34.

The square root of 32928145 is about 5738.3050633441. The cubic root of 32928145 is about 320.5204583892.

The spelling of 32928145 in words is "thirty-two million, nine hundred twenty-eight thousand, one hundred forty-five".