32028440 has 16 divisors (see below), whose sum is σ = 72064080. Its totient is φ = 12811360.

The previous prime is 32028431. The next prime is 32028449. The reversal of 32028440 is 4482023.

It is an interprime number because it is at equal distance from previous prime (32028431) and next prime (32028449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32028449) 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 3 ways as a sum of consecutive naturals, for example, 400316 + ... + 400395.

It is an arithmetic number, because the mean of its divisors is an integer number (4504005).

Almost surely, 2^32028440 is an apocalyptic number.

It is an amenable number.

32028440 is an abundant number, since it is smaller than the sum of its proper divisors (40035640).

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

32028440 is a wasteful number, since it uses less digits than its factorization.

32028440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800722 (or 800718 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 32028440 is about 5659.3674558205. The cubic root of 32028440 is about 317.5742360564.

The spelling of 32028440 in words is "thirty-two million, twenty-eight thousand, four hundred forty".