29906724688 has 20 divisors (see below), whose sum is σ = 57962390740. Its totient is φ = 14948688384.

The previous prime is 29906724647. The next prime is 29906724691. The reversal of 29906724688 is 88642760992.

It can be written as a sum of positive squares in 2 ways, for example, as 24764687424 + 5142037264 = 157368^2 + 71708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239043 + ... + 341986.

It is an arithmetic number, because the mean of its divisors is an integer number (2898119537).

Almost surely, 2^29906724688 is an apocalyptic number.

It is an amenable number.

29906724688 is a deficient number, since it is larger than the sum of its proper divisors (28055666052).

29906724688 is a wasteful number, since it uses less digits than its factorization.

29906724688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584254 (or 584248 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 29906724688 in words is "twenty-nine billion, nine hundred six million, seven hundred twenty-four thousand, six hundred eighty-eight".