32140240 has 40 divisors (see below), whose sum is σ = 81521568. Its totient is φ = 11687040.

The previous prime is 32140237. The next prime is 32140243. The reversal of 32140240 is 4204123.

It is an interprime number because it is at equal distance from previous prime (32140237) and next prime (32140243).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32140243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17382 + ... + 19141.

Almost surely, 2^32140240 is an apocalyptic number.

It is an amenable number.

32140240 is an abundant number, since it is smaller than the sum of its proper divisors (49381328).

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

32140240 is a wasteful number, since it uses less digits than its factorization.

32140240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36547 (or 36541 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 32140240 is about 5669.2362801351. The cubic root of 32140240 is about 317.9433201988.

Adding to 32140240 its reverse (4204123), we get a palindrome (36344363).

The spelling of 32140240 in words is "thirty-two million, one hundred forty thousand, two hundred forty".