32304140 has 24 divisors (see below), whose sum is σ = 74006352. Its totient is φ = 11746880.

The previous prime is 32304113. The next prime is 32304149. The reversal of 32304140 is 4140323.

It is a super-2 number, since 2×32304140² = 2087114922279200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32304149) 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, 73199 + ... + 73638.

It is an arithmetic number, because the mean of its divisors is an integer number (3083598).

Almost surely, 2^32304140 is an apocalyptic number.

It is an amenable number.

32304140 is an abundant number, since it is smaller than the sum of its proper divisors (41702212).

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

32304140 is a wasteful number, since it uses less digits than its factorization.

32304140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146857 (or 146855 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 32304140 is about 5683.6731081230. The cubic root of 32304140 is about 318.4828575510.

Adding to 32304140 its reverse (4140323), we get a palindrome (36444463).

The spelling of 32304140 in words is "thirty-two million, three hundred four thousand, one hundred forty".