2501728929 has 64 divisors (see below), whose sum is σ = 4433633280. Its totient is φ = 1363158720.

The previous prime is 2501728927. The next prime is 2501728937. The reversal of 2501728929 is 9298271052.

It is a happy number.

It is not a de Polignac number, because 2501728929 - 2¹ = 2501728927 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2501728927) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1829404 + ... + 1830770.

It is an arithmetic number, because the mean of its divisors is an integer number (69275520).

Almost surely, 2^2501728929 is an apocalyptic number.

It is an amenable number.

2501728929 is a deficient number, since it is larger than the sum of its proper divisors (1931904351).

2501728929 is a wasteful number, since it uses less digits than its factorization.

2501728929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1821 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2501728929 is about 50017.2863018377. The cubic root of 2501728929 is about 1357.5216052237.

The spelling of 2501728929 in words is "two billion, five hundred one million, seven hundred twenty-eight thousand, nine hundred twenty-nine".