3215620220 has 24 divisors (see below), whose sum is σ = 6756825600. Its totient is φ = 1285481792.

The previous prime is 3215620207. The next prime is 3215620223. The reversal of 3215620220 is 220265123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215620223) 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, 12860 + ... + 81219.

It is an arithmetic number, because the mean of its divisors is an integer number (281534400).

Almost surely, 2^3215620220 is an apocalyptic number.

It is an amenable number.

3215620220 is an abundant number, since it is smaller than the sum of its proper divisors (3541205380).

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

3215620220 is a wasteful number, since it uses less digits than its factorization.

3215620220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95797 (or 95795 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3215620220 is about 56706.4389641952. The cubic root of 3215620220 is about 1476.0064329202.

Adding to 3215620220 its reverse (220265123), we get a palindrome (3435885343).

The spelling of 3215620220 in words is "three billion, two hundred fifteen million, six hundred twenty thousand, two hundred twenty".