3920770256 has 90 divisors (see below), whose sum is σ = 8602117398. Its totient is φ = 1730277120.

The previous prime is 3920770219. The next prime is 3920770267. The reversal of 3920770256 is 6520770293.

It can be written as a sum of positive squares in 3 ways, for example, as 41473600 + 3879296656 = 6440^2 + 62284^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1429046 + ... + 1431786.

Almost surely, 2^3920770256 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 3920770256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4301058699).

3920770256 is an abundant number, since it is smaller than the sum of its proper divisors (4681347142).

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

3920770256 is a wasteful number, since it uses less digits than its factorization.

3920770256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 3920770256 is about 62616.0542991971. The cubic root of 3920770256 is about 1576.8502995704.

The spelling of 3920770256 in words is "three billion, nine hundred twenty million, seven hundred seventy thousand, two hundred fifty-six".