29793087920 has 20 divisors (see below), whose sum is σ = 69268929600. Its totient is φ = 11917235136.

The previous prime is 29793087917. The next prime is 29793087931. The reversal of 29793087920 is 2978039792.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

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, 186206720 + ... + 186206879.

It is an arithmetic number, because the mean of its divisors is an integer number (3463446480).

Almost surely, 2^29793087920 is an apocalyptic number.

29793087920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29793087920 is an abundant number, since it is smaller than the sum of its proper divisors (39475841680).

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

29793087920 is a wasteful number, since it uses less digits than its factorization.

29793087920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372413612 (or 372413606 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 29793087920 in words is "twenty-nine billion, seven hundred ninety-three million, eighty-seven thousand, nine hundred twenty".