32640342 has 16 divisors (see below), whose sum is σ = 74606592. Its totient is φ = 9325800.

The previous prime is 32640319. The next prime is 32640343. The reversal of 32640342 is 24304623.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32640343) 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, 388534 + ... + 388617.

It is an arithmetic number, because the mean of its divisors is an integer number (4662912).

Almost surely, 2^32640342 is an apocalyptic number.

32640342 is an abundant number, since it is smaller than the sum of its proper divisors (41966250).

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

32640342 is a wasteful number, since it uses less digits than its factorization.

32640342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777163.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 32640342 is about 5713.1726737427. The cubic root of 32640342 is about 319.5839058042.

Adding to 32640342 its reverse (24304623), we get a palindrome (56944965).

The spelling of 32640342 in words is "thirty-two million, six hundred forty thousand, three hundred forty-two".