32250640 has 20 divisors (see below), whose sum is σ = 74982924. Its totient is φ = 12900224.

The previous prime is 32250637. The next prime is 32250653. The reversal of 32250640 is 4605223.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13897984 + 18352656 = 3728^2 + 4284^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201487 + ... + 201646.

Almost surely, 2^32250640 is an apocalyptic number.

It is an amenable number.

32250640 is an abundant number, since it is smaller than the sum of its proper divisors (42732284).

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

32250640 is a wasteful number, since it uses less digits than its factorization.

32250640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403146 (or 403140 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 32250640 is about 5678.9646943787. The cubic root of 32250640 is about 318.3069435893.

Adding to 32250640 its reverse (4605223), we get a palindrome (36855863).

The spelling of 32250640 in words is "thirty-two million, two hundred fifty thousand, six hundred forty".