3545113728 has 128 divisors (see below), whose sum is σ = 10237389120. Its totient is φ = 1080446976.

The previous prime is 3545113723. The next prime is 3545113753. The reversal of 3545113728 is 8273115453.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (3545113723) 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, 530826 + ... + 537462.

Almost surely, 2^3545113728 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 3545113728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5118694560).

3545113728 is an abundant number, since it is smaller than the sum of its proper divisors (6692275392).

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

3545113728 is a wasteful number, since it uses less digits than its factorization.

3545113728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774 (or 6762 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 3545113728 is about 59540.8576357445. The cubic root of 3545113728 is about 1524.7900781370.

The spelling of 3545113728 in words is "three billion, five hundred forty-five million, one hundred thirteen thousand, seven hundred twenty-eight".