2729655540 has 36 divisors (see below), whose sum is σ = 8279955684. Its totient is φ = 727908096.

The previous prime is 2729655517. The next prime is 2729655547. The reversal of 2729655540 is 455569272.

2729655540 is a `hidden beast` number, since 2 + 7 + 2 + 96 + 5 + 554 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1492585956 + 1237069584 = 38634^2 + 35172^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2729655547) 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 11 ways as a sum of consecutive naturals, for example, 7582197 + ... + 7582556.

It is an arithmetic number, because the mean of its divisors is an integer number (229998769).

Almost surely, 2^2729655540 is an apocalyptic number.

2729655540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2729655540 is an abundant number, since it is smaller than the sum of its proper divisors (5550300144).

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

2729655540 is a wasteful number, since it uses less digits than its factorization.

2729655540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15164768 (or 15164763 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The square root of 2729655540 is about 52246.1055007931. The cubic root of 2729655540 is about 1397.5562026503.

The spelling of 2729655540 in words is "two billion, seven hundred twenty-nine million, six hundred fifty-five thousand, five hundred forty".