32691340 has 48 divisors (see below), whose sum is σ = 79307424. Its totient is φ = 11187200.

The previous prime is 32691331. The next prime is 32691341. The reversal of 32691340 is 4319623.

It is a junction number, because it is equal to n+sod(n) for n = 32691299 and 32691308.

It is not an unprimeable number, because it can be changed into a prime (32691341) 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 15 ways as a sum of consecutive naturals, for example, 631 + ... + 8110.

It is an arithmetic number, because the mean of its divisors is an integer number (1652238).

Almost surely, 2^32691340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32691340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39653712).

32691340 is an abundant number, since it is smaller than the sum of its proper divisors (46616084).

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

32691340 is a wasteful number, since it uses less digits than its factorization.

32691340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8778 (or 8776 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 32691340 is about 5717.6341261050. The cubic root of 32691340 is about 319.7502608748.

The spelling of 32691340 in words is "thirty-two million, six hundred ninety-one thousand, three hundred forty".