2649728452 has 24 divisors (see below), whose sum is σ = 5304615680. Its totient is φ = 1134492480.

The previous prime is 2649728401. The next prime is 2649728453. The reversal of 2649728452 is 2548279462.

It is a junction number, because it is equal to n+sod(n) for n = 2649728396 and 2649728405.

It is not an unprimeable number, because it can be changed into a prime (2649728453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16449 + ... + 74632.

Almost surely, 2^2649728452 is an apocalyptic number.

It is an amenable number.

2649728452 is an abundant number, since it is smaller than the sum of its proper divisors (2654887228).

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

2649728452 is a wasteful number, since it uses less digits than its factorization.

2649728452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92131 (or 92129 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 49.

The square root of 2649728452 is about 51475.5131300311. The cubic root of 2649728452 is about 1383.7802346599.

The spelling of 2649728452 in words is "two billion, six hundred forty-nine million, seven hundred twenty-eight thousand, four hundred fifty-two".