32928020 has 24 divisors (see below), whose sum is σ = 69837768. Its totient is φ = 13040000.

The previous prime is 32928017. The next prime is 32928023. The reversal of 32928020 is 2082923.

It is an interprime number because it is at equal distance from previous prime (32928017) and next prime (32928023).

It can be written as a sum of positive squares in 4 ways, for example, as 17023876 + 15904144 = 4126^2 + 3988^2 .

It is a super-2 number, since 2×32928020² = 2168509002240800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32928023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6131 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (2909907).

Almost surely, 2^32928020 is an apocalyptic number.

It is an amenable number.

32928020 is an abundant number, since it is smaller than the sum of its proper divisors (36909748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32928020 is a wasteful number, since it uses less digits than its factorization.

32928020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16411 (or 16409 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 32928020 is about 5738.2941716158. The cubic root of 32928020 is about 320.5200528080.

The spelling of 32928020 in words is "thirty-two million, nine hundred twenty-eight thousand, twenty".