3928072620 has 96 divisors (see below), whose sum is σ = 11745054720. Its totient is φ = 978727680.

The previous prime is 3928072607. The next prime is 3928072627. The reversal of 3928072620 is 262708293.

It is not an unprimeable number, because it can be changed into a prime (3928072627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17529 + ... + 90351.

It is an arithmetic number, because the mean of its divisors is an integer number (122344320).

Almost surely, 2^3928072620 is an apocalyptic number.

3928072620 is a gapful number since it is divisible by the number (30) 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 3928072620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5872527360).

3928072620 is an abundant number, since it is smaller than the sum of its proper divisors (7816982100).

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

3928072620 is a wasteful number, since it uses less digits than its factorization.

3928072620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72895 (or 72893 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 3928072620 is about 62674.3378106223. The cubic root of 3928072620 is about 1577.8286442012.

The spelling of 3928072620 in words is "three billion, nine hundred twenty-eight million, seventy-two thousand, six hundred twenty".