32242540 has 96 divisors (see below), whose sum is σ = 80668224. Its totient is φ = 10690560.

The previous prime is 32242537. The next prime is 32242549. The reversal of 32242540 is 4524223.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (32242549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138264 + ... + 138496.

It is an arithmetic number, because the mean of its divisors is an integer number (840294).

Almost surely, 2^32242540 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 32242540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40334112).

32242540 is an abundant number, since it is smaller than the sum of its proper divisors (48425684).

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

32242540 is a wasteful number, since it uses less digits than its factorization.

32242540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 32242540 is about 5678.2514914364. The cubic root of 32242540 is about 318.2802929334.

Adding to 32242540 its reverse (4524223), we get a palindrome (36766763).

The spelling of 32242540 in words is "thirty-two million, two hundred forty-two thousand, five hundred forty".