32643620 has 48 divisors (see below), whose sum is σ = 72726528. Its totient is φ = 12286080.

The previous prime is 32643613. The next prime is 32643623. The reversal of 32643620 is 2634623.

It is a self number, because there is not a number n which added to its sum of digits gives 32643620.

It is not an unprimeable number, because it can be changed into a prime (32643623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22229 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (1515136).

Almost surely, 2^32643620 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 32643620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36363264).

32643620 is an abundant number, since it is smaller than the sum of its proper divisors (40082908).

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

32643620 is a wasteful number, since it uses less digits than its factorization.

32643620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 32643620 is about 5713.4595474196. The cubic root of 32643620 is about 319.5946038229.

The spelling of 32643620 in words is "thirty-two million, six hundred forty-three thousand, six hundred twenty".