3581152728 has 32 divisors (see below), whose sum is σ = 8955437760. Its totient is φ = 1193376800.

The previous prime is 3581152723. The next prime is 3581152753. The reversal of 3581152728 is 8272511853.

3581152728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3581152728² = 25649309722523683968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3581152728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581152723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73051 + ... + 111797.

It is an arithmetic number, because the mean of its divisors is an integer number (279857430).

Almost surely, 2^3581152728 is an apocalyptic number.

It is an amenable number.

3581152728 is an abundant number, since it is smaller than the sum of its proper divisors (5374285032).

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

3581152728 is a wasteful number, since it uses less digits than its factorization.

3581152728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42607 (or 42603 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 3581152728 is about 59842.7332931911. The cubic root of 3581152728 is about 1529.9395832437.

The spelling of 3581152728 in words is "three billion, five hundred eighty-one million, one hundred fifty-two thousand, seven hundred twenty-eight".