3943072520 has 64 divisors (see below), whose sum is σ = 9086584320. Its totient is φ = 1539258624.

The previous prime is 3943072519. The next prime is 3943072537. The reversal of 3943072520 is 252703493.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698429 + ... + 704051.

It is an arithmetic number, because the mean of its divisors is an integer number (141977880).

Almost surely, 2^3943072520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3943072520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4543292160).

3943072520 is an abundant number, since it is smaller than the sum of its proper divisors (5143511800).

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

3943072520 is a wasteful number, since it uses less digits than its factorization.

3943072520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054 (or 6050 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 3943072520 is about 62793.8891931373. The cubic root of 3943072520 is about 1579.8344803375.

The spelling of 3943072520 in words is "three billion, nine hundred forty-three million, seventy-two thousand, five hundred twenty".