3505252728 has 16 divisors (see below), whose sum is σ = 8763131880. Its totient is φ = 1168417568.

The previous prime is 3505252727. The next prime is 3505252769. The reversal of 3505252728 is 8272525053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3505252721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73026075 + ... + 73026122.

Almost surely, 2^3505252728 is an apocalyptic number.

It is an amenable number.

3505252728 is an abundant number, since it is smaller than the sum of its proper divisors (5257879152).

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

3505252728 is a wasteful number, since it uses less digits than its factorization.

3505252728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146052206 (or 146052202 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 3505252728 is about 59205.1748413937. The cubic root of 3505252728 is about 1519.0536479965.

The spelling of 3505252728 in words is "three billion, five hundred five million, two hundred fifty-two thousand, seven hundred twenty-eight".