29727921052 has 24 divisors (see below), whose sum is σ = 52764605712. Its totient is φ = 14653584000.

The previous prime is 29727921017. The next prime is 29727921053. The reversal of 29727921052 is 25012972792.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 29727920993 and 29727921011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29727921053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63774 + ... + 252037.

It is an arithmetic number, because the mean of its divisors is an integer number (2198525238).

Almost surely, 2^29727921052 is an apocalyptic number.

It is an amenable number.

29727921052 is a deficient number, since it is larger than the sum of its proper divisors (23036684660).

29727921052 is a wasteful number, since it uses less digits than its factorization.

29727921052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316149 (or 316147 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 29727921052 in words is "twenty-nine billion, seven hundred twenty-seven million, nine hundred twenty-one thousand, fifty-two".