32453440 has 56 divisors (see below), whose sum is σ = 79397352. Its totient is φ = 12625920.

The previous prime is 32453431. The next prime is 32453441. The reversal of 32453440 is 4435423.

It can be written as a sum of positive squares in 4 ways, for example, as 5992704 + 26460736 = 2448^2 + 5144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32453441) 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, 10470 + ... + 13210.

Almost surely, 2^32453440 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 32453440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39698676).

32453440 is an abundant number, since it is smaller than the sum of its proper divisors (46943912).

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

32453440 is a wasteful number, since it uses less digits than its factorization.

32453440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 32453440 is about 5696.7920797586. The cubic root of 32453440 is about 318.9727475466.

Adding to 32453440 its reverse (4435423), we get a palindrome (36888863).

The spelling of 32453440 in words is "thirty-two million, four hundred fifty-three thousand, four hundred forty".