32020055440 has 40 divisors (see below), whose sum is σ = 74455234560. Its totient is φ = 12806541696.

The previous prime is 32020055437. The next prime is 32020055443. The reversal of 32020055440 is 4455002023.

It is an interprime number because it is at equal distance from previous prime (32020055437) and next prime (32020055443).

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

It is not an unprimeable number, because it can be changed into a prime (32020055443) 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, 904147 + ... + 938893.

It is an arithmetic number, because the mean of its divisors is an integer number (1861380864).

Almost surely, 2^32020055440 is an apocalyptic number.

It is an amenable number.

32020055440 is an abundant number, since it is smaller than the sum of its proper divisors (42435179120).

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

32020055440 is a wasteful number, since it uses less digits than its factorization.

32020055440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46279 (or 46273 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 32020055440 its reverse (4455002023), we get a palindrome (36475057463).

The spelling of 32020055440 in words is "thirty-two billion, twenty million, fifty-five thousand, four hundred forty".