29057879920 has 40 divisors (see below), whose sum is σ = 67591495296. Its totient is φ = 11617659648.

The previous prime is 29057879891. The next prime is 29057879953. The reversal of 29057879920 is 2997875092.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86694 + ... + 256186.

Almost surely, 2^29057879920 is an apocalyptic number.

29057879920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29057879920 is an abundant number, since it is smaller than the sum of its proper divisors (38533615376).

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

29057879920 is a wasteful number, since it uses less digits than its factorization.

29057879920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171649 (or 171643 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 29057879920 in words is "twenty-nine billion, fifty-seven million, eight hundred seventy-nine thousand, nine hundred twenty".