3215232020 has 144 divisors (see below), whose sum is σ = 9227893248. Its totient is φ = 925021440.

The previous prime is 3215232017. The next prime is 3215232037. The reversal of 3215232020 is 202325123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3215231983 and 3215232001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128669 + ... + 151611.

It is an arithmetic number, because the mean of its divisors is an integer number (64082592).

Almost surely, 2^3215232020 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 3215232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4613946624).

3215232020 is an abundant number, since it is smaller than the sum of its proper divisors (6012661228).

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

3215232020 is a wasteful number, since it uses less digits than its factorization.

3215232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990 (or 22981 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3215232020 is about 56703.0159691705. The cubic root of 3215232020 is about 1475.9470344510.

Adding to 3215232020 its reverse (202325123), we get a palindrome (3417557143).

The spelling of 3215232020 in words is "three billion, two hundred fifteen million, two hundred thirty-two thousand, twenty".