3201219728 has 20 divisors (see below), whose sum is σ = 7088415360. Its totient is φ = 1371951264.

The previous prime is 3201219727. The next prime is 3201219737. The reversal of 3201219728 is 8279121023.

It is not an unprimeable number, because it can be changed into a prime (3201219727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14291048 + ... + 14291271.

It is an arithmetic number, because the mean of its divisors is an integer number (354420768).

Almost surely, 2^3201219728 is an apocalyptic number.

It is an amenable number.

3201219728 is an abundant number, since it is smaller than the sum of its proper divisors (3887195632).

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

3201219728 is a wasteful number, since it uses less digits than its factorization.

3201219728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28582334 (or 28582328 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3201219728 is about 56579.3224420371. The cubic root of 3201219728 is about 1473.7998055215.

The spelling of 3201219728 in words is "three billion, two hundred one million, two hundred nineteen thousand, seven hundred twenty-eight".