32081620 has 12 divisors (see below), whose sum is σ = 67371444. Its totient is φ = 12832640.

The previous prime is 32081603. The next prime is 32081657. The reversal of 32081620 is 2618023.

It can be written as a sum of positive squares in 2 ways, for example, as 9156676 + 22924944 = 3026^2 + 4788^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32081591 and 32081600.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 802021 + ... + 802060.

It is an arithmetic number, because the mean of its divisors is an integer number (5614287).

Almost surely, 2^32081620 is an apocalyptic number.

It is an amenable number.

32081620 is an abundant number, since it is smaller than the sum of its proper divisors (35289824).

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

32081620 is a wasteful number, since it uses less digits than its factorization.

32081620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604090 (or 1604088 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 32081620 is about 5664.0639120688. The cubic root of 32081620 is about 317.7499055469.

Adding to 32081620 its reverse (2618023), we get a palindrome (34699643).

The spelling of 32081620 in words is "thirty-two million, eighty-one thousand, six hundred twenty".