3521870688 has 144 divisors (see below), whose sum is σ = 11387147184. Its totient is φ = 947036160.

The previous prime is 3521870687. The next prime is 3521870701. The reversal of 3521870688 is 8860781253.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521870687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57948 + ... + 101988.

It is an arithmetic number, because the mean of its divisors is an integer number (79077411).

Almost surely, 2^3521870688 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 3521870688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5693573592).

3521870688 is an abundant number, since it is smaller than the sum of its proper divisors (7865276496).

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

3521870688 is a wasteful number, since it uses less digits than its factorization.

3521870688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44085 (or 44070 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 3521870688 is about 59345.3510226370. The cubic root of 3521870688 is about 1521.4504114881.

The spelling of 3521870688 in words is "three billion, five hundred twenty-one million, eight hundred seventy thousand, six hundred eighty-eight".