3880243440 has 120 divisors (see below), whose sum is σ = 13513853808. Its totient is φ = 1034726400.

The previous prime is 3880243439. The next prime is 3880243447. The reversal of 3880243440 is 443420883.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3880243395 and 3880243404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3880243447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80361 + ... + 119240.

Almost surely, 2^3880243440 is an apocalyptic number.

3880243440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3880243440 is an abundant number, since it is smaller than the sum of its proper divisors (9633610368).

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

3880243440 is a wasteful number, since it uses less digits than its factorization.

3880243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199629 (or 199611 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The square root of 3880243440 is about 62291.6000757727. The cubic root of 3880243440 is about 1571.3984645629.

The spelling of 3880243440 in words is "three billion, eight hundred eighty million, two hundred forty-three thousand, four hundred forty".