2729872530 has 480 divisors, whose sum is σ = 9677428992. Its totient is φ = 539447040.

The previous prime is 2729872513. The next prime is 2729872531. The reversal of 2729872530 is 352789272.

2729872530 is a `hidden beast` number, since 27 + 2 + 98 + 7 + 2 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2729872531) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 15779524 + ... + 15779696.

Almost surely, 2^2729872530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2729872530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4838714496).

2729872530 is an abundant number, since it is smaller than the sum of its proper divisors (6947556462).

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

2729872530 is a wasteful number, since it uses less digits than its factorization.

2729872530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 2729872530 is about 52248.1820736377. The cubic root of 2729872530 is about 1397.5932339021.

The spelling of 2729872530 in words is "two billion, seven hundred twenty-nine million, eight hundred seventy-two thousand, five hundred thirty".