32746640 has 20 divisors (see below), whose sum is σ = 76136124. Its totient is φ = 13098624.

The previous prime is 32746631. The next prime is 32746661. The reversal of 32746640 is 4664723.

It can be written as a sum of positive squares in 2 ways, for example, as 10316944 + 22429696 = 3212^2 + 4736^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 32746597 and 32746606.

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, 204587 + ... + 204746.

Almost surely, 2^32746640 is an apocalyptic number.

It is an amenable number.

32746640 is an abundant number, since it is smaller than the sum of its proper divisors (43389484).

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

32746640 is a wasteful number, since it uses less digits than its factorization.

32746640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409346 (or 409340 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 32746640 is about 5722.4679990368. The cubic root of 32746640 is about 319.9304536364.

The spelling of 32746640 in words is "thirty-two million, seven hundred forty-six thousand, six hundred forty".