32688340 has 12 divisors (see below), whose sum is σ = 68645556. Its totient is φ = 13075328.

The previous prime is 32688319. The next prime is 32688367. The reversal of 32688340 is 4388623.

It can be written as a sum of positive squares in 2 ways, for example, as 24462916 + 8225424 = 4946^2 + 2868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32688296 and 32688305.

It is a congruent number.

It is an unprimeable number.

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, 817189 + ... + 817228.

It is an arithmetic number, because the mean of its divisors is an integer number (5720463).

Almost surely, 2^32688340 is an apocalyptic number.

It is an amenable number.

32688340 is an abundant number, since it is smaller than the sum of its proper divisors (35957216).

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

32688340 is a wasteful number, since it uses less digits than its factorization.

32688340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634426 (or 1634424 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 32688340 is about 5717.3717738136. The cubic root of 32688340 is about 319.7404796898.

The spelling of 32688340 in words is "thirty-two million, six hundred eighty-eight thousand, three hundred forty".