32420560 has 40 divisors (see below), whose sum is σ = 75995136. Its totient is φ = 12862080.

The previous prime is 32420519. The next prime is 32420561. The reversal of 32420560 is 6502423.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32420561) 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, 8565 + ... + 11755.

Almost surely, 2^32420560 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 32420560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37997568).

32420560 is an abundant number, since it is smaller than the sum of its proper divisors (43574576).

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

32420560 is a wasteful number, since it uses less digits than its factorization.

32420560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331 (or 3325 counting only the distinct ones).

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

The square root of 32420560 is about 5693.9055137928. The cubic root of 32420560 is about 318.8649893980.

Adding to 32420560 its reverse (6502423), we get a palindrome (38922983).

The spelling of 32420560 in words is "thirty-two million, four hundred twenty thousand, five hundred sixty".