3500438140 has 48 divisors (see below), whose sum is σ = 7657947360. Its totient is φ = 1342853120.

The previous prime is 3500438131. The next prime is 3500438147. The reversal of 3500438140 is 418340053.

It is a junction number, because it is equal to n+sod(n) for n = 3500438099 and 3500438108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3500438147) 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, 12204 + ... + 84556.

It is an arithmetic number, because the mean of its divisors is an integer number (159540570).

Almost surely, 2^3500438140 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 3500438140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3828973680).

3500438140 is an abundant number, since it is smaller than the sum of its proper divisors (4157509220).

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

3500438140 is a wasteful number, since it uses less digits than its factorization.

3500438140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72462 (or 72460 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3500438140 is about 59164.5006739683. The cubic root of 3500438140 is about 1518.3578381083.

Adding to 3500438140 its reverse (418340053), we get a palindrome (3918778193).

The spelling of 3500438140 in words is "three billion, five hundred million, four hundred thirty-eight thousand, one hundred forty".