29728464909 has 64 divisors (see below), whose sum is σ = 48161046528. Its totient is φ = 16064294400.

The previous prime is 29728464889. The next prime is 29728464911. The reversal of 29728464909 is 90946482792.

It is not a de Polignac number, because 29728464909 - 2¹⁶ = 29728399373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29728464709) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8203672 + ... + 8207294.

It is an arithmetic number, because the mean of its divisors is an integer number (752516352).

Almost surely, 2^29728464909 is an apocalyptic number.

It is an amenable number.

29728464909 is a deficient number, since it is larger than the sum of its proper divisors (18432581619).

29728464909 is a wasteful number, since it uses less digits than its factorization.

29728464909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298.

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 29728464909 in words is "twenty-nine billion, seven hundred twenty-eight million, four hundred sixty-four thousand, nine hundred nine".