3573521280 has 512 divisors, whose sum is σ = 14946508800. Its totient is φ = 789626880.

The previous prime is 3573521279. The next prime is 3573521297. The reversal of 3573521280 is 821253753.

It is a happy number.

3573521280 is a `hidden beast` number, since 3 + 57 + 3 + 521 + 2 + 80 = 666.

It is a super-2 number, since 2×3573521280² = 25540108677225676800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3749284 + ... + 3750236.

It is an arithmetic number, because the mean of its divisors is an integer number (29192400).

Almost surely, 2^3573521280 is an apocalyptic number.

3573521280 is a gapful number since it is divisible by the number (30) 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 3573521280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7473254400).

3573521280 is an abundant number, since it is smaller than the sum of its proper divisors (11372987520).

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

3573521280 is a wasteful number, since it uses less digits than its factorization.

3573521280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1001 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 3573521280 is about 59778.9367586945. The cubic root of 3573521280 is about 1528.8520416324.

It can be divided in two parts, 3573521 and 280, that added together give a triangular number (3573801 = T₂₆₇₃).

The spelling of 3573521280 in words is "three billion, five hundred seventy-three million, five hundred twenty-one thousand, two hundred eighty".