3521489472 has 224 divisors, whose sum is σ = 10739688960. Its totient is φ = 1130734080.

The previous prime is 3521489437. The next prime is 3521489479. The reversal of 3521489472 is 2749841253.

3521489472 is a `hidden beast` number, since 3 + 521 + 4 + 89 + 47 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (3521489479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6166947 + ... + 6167517.

It is an arithmetic number, because the mean of its divisors is an integer number (47945040).

Almost surely, 2^3521489472 is an apocalyptic number.

3521489472 is a gapful number since it is divisible by the number (32) 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 3521489472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5369844480).

3521489472 is an abundant number, since it is smaller than the sum of its proper divisors (7218199488).

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

3521489472 is a wasteful number, since it uses less digits than its factorization.

3521489472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 702 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 3521489472 is about 59342.1390918797. The cubic root of 3521489472 is about 1521.3955143213.

The spelling of 3521489472 in words is "three billion, five hundred twenty-one million, four hundred eighty-nine thousand, four hundred seventy-two".