3880880640 has 640 divisors, whose sum is σ = 16993912320. Its totient is φ = 817496064.

The previous prime is 3880880629. The next prime is 3880880657. The reversal of 3880880640 is 460880883.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×3880880640² = 30122469083853619200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6289612 + ... + 6290228.

It is an arithmetic number, because the mean of its divisors is an integer number (26552988).

Almost surely, 2^3880880640 is an apocalyptic number.

3880880640 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 3880880640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8496956160).

3880880640 is an abundant number, since it is smaller than the sum of its proper divisors (13113031680).

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

3880880640 is a wasteful number, since it uses less digits than its factorization.

3880880640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 3880880640 is about 62296.7145201093. The cubic root of 3880880640 is about 1571.4844763740.

The spelling of 3880880640 in words is "three billion, eight hundred eighty million, eight hundred eighty thousand, six hundred forty".