3549864528 has 480 divisors, whose sum is σ = 12635191296. Its totient is φ = 942948864.

The previous prime is 3549864523. The next prime is 3549864547. The reversal of 3549864528 is 8254689453.

3549864528 is a `hidden beast` number, since 3 + 54 + 9 + 8 + 64 + 528 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3549864523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33176251 + ... + 33176357.

Almost surely, 2^3549864528 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 3549864528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6317595648).

3549864528 is an abundant number, since it is smaller than the sum of its proper divisors (9085326768).

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

3549864528 is a wasteful number, since it uses less digits than its factorization.

3549864528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 195 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The square root of 3549864528 is about 59580.7395724491. The cubic root of 3549864528 is about 1525.4708968439.

The spelling of 3549864528 in words is "three billion, five hundred forty-nine million, eight hundred sixty-four thousand, five hundred twenty-eight".