2898721836 has 48 divisors (see below), whose sum is σ = 7757639680. Its totient is φ = 935070480.

The previous prime is 2898721831. The next prime is 2898721877. The reversal of 2898721836 is 6381278982.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2898721831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429556 + ... + 436251.

Almost surely, 2^2898721836 is an apocalyptic number.

It is an amenable number.

2898721836 is an abundant number, since it is smaller than the sum of its proper divisors (4858917844).

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

2898721836 is a wasteful number, since it uses less digits than its factorization.

2898721836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865851 (or 865843 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 2898721836 is about 53839.7793086116. The cubic root of 2898721836 is about 1425.8336086523.

The spelling of 2898721836 in words is "two billion, eight hundred ninety-eight million, seven hundred twenty-one thousand, eight hundred thirty-six".