2533307728 has 20 divisors (see below), whose sum is σ = 5609467360. Its totient is φ = 1085703264.

The previous prime is 2533307701. The next prime is 2533307743. The reversal of 2533307728 is 8277033352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11309298 + ... + 11309521.

It is an arithmetic number, because the mean of its divisors is an integer number (280473368).

Almost surely, 2^2533307728 is an apocalyptic number.

2533307728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2533307728 is an abundant number, since it is smaller than the sum of its proper divisors (3076159632).

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

2533307728 is a wasteful number, since it uses less digits than its factorization.

2533307728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22618834 (or 22618828 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 2533307728 is about 50331.9752046351. The cubic root of 2533307728 is about 1363.2096423684.

The spelling of 2533307728 in words is "two billion, five hundred thirty-three million, three hundred seven thousand, seven hundred twenty-eight".