3870208520 has 64 divisors (see below), whose sum is σ = 8852163840. Its totient is φ = 1522656000.

The previous prime is 3870208493. The next prime is 3870208523. The reversal of 3870208520 is 258020783.

It is a happy number.

It is a Cunningham number, because it is equal to 62211²-1.

It is a super-5 number, since 5×3870208520⁵ (a number of 49 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (3870208523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619010 + ... + 625230.

It is an arithmetic number, because the mean of its divisors is an integer number (138315060).

Almost surely, 2^3870208520 is an apocalyptic number.

It is an amenable number.

3870208520 is an abundant number, since it is smaller than the sum of its proper divisors (4981955320).

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

3870208520 is a wasteful number, since it uses less digits than its factorization.

3870208520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 3870208520 is about 62210.9999919628. Note that the first 5 decimals coincide. The cubic root of 3870208520 is about 1570.0426672381.

The spelling of 3870208520 in words is "three billion, eight hundred seventy million, two hundred eight thousand, five hundred twenty".