3215204928 has 504 divisors, whose sum is σ = 11198270720. Its totient is φ = 906992640.

The previous prime is 3215204921. The next prime is 3215204929. The reversal of 3215204928 is 8294025123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3215204892 and 3215204901.

It is not an unprimeable number, because it can be changed into a prime (3215204921) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 103716273 + ... + 103716303.

Almost surely, 2^3215204928 is an apocalyptic number.

3215204928 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3215204928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5599135360).

3215204928 is an abundant number, since it is smaller than the sum of its proper divisors (7983065792).

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

3215204928 is an equidigital number, since it uses as much as digits as its factorization.

3215204928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3215204928 is about 56702.7770748488. Note that the first 3 decimals coincide. The cubic root of 3215204928 is about 1475.9428889265.

The spelling of 3215204928 in words is "three billion, two hundred fifteen million, two hundred four thousand, nine hundred twenty-eight".