3220269640 has 32 divisors (see below), whose sum is σ = 8280694080. Its totient is φ = 1104092352.

The previous prime is 3220269631. The next prime is 3220269667. The reversal of 3220269640 is 469620223.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3220269596 and 3220269605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5750202 + ... + 5750761.

It is an arithmetic number, because the mean of its divisors is an integer number (258771690).

Almost surely, 2^3220269640 is an apocalyptic number.

It is an amenable number.

3220269640 is an abundant number, since it is smaller than the sum of its proper divisors (5060424440).

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

3220269640 is a wasteful number, since it uses less digits than its factorization.

3220269640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500981 (or 11500977 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 3220269640 is about 56747.4196770214. The cubic root of 3220269640 is about 1476.7174693108.

Adding to 3220269640 its reverse (469620223), we get a palindrome (3689889863).

The spelling of 3220269640 in words is "three billion, two hundred twenty million, two hundred sixty-nine thousand, six hundred forty".