29819948840 has 32 divisors (see below), whose sum is σ = 73194420960. Its totient is φ = 10843617600.

The previous prime is 29819948819. The next prime is 29819948843. The reversal of 29819948840 is 4884991892.

It is not an unprimeable number, because it can be changed into a prime (29819948843) 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 7 ways as a sum of consecutive naturals, for example, 33885866 + ... + 33886745.

It is an arithmetic number, because the mean of its divisors is an integer number (2287325655).

Almost surely, 2^29819948840 is an apocalyptic number.

29819948840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29819948840 is an abundant number, since it is smaller than the sum of its proper divisors (43374472120).

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

29819948840 is a wasteful number, since it uses less digits than its factorization.

29819948840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67772633 (or 67772629 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 62.

The spelling of 29819948840 in words is "twenty-nine billion, eight hundred nineteen million, nine hundred forty-eight thousand, eight hundred forty".