29849138920 has 32 divisors (see below), whose sum is σ = 67165783200. Its totient is φ = 11938727488.

The previous prime is 29849138863. The next prime is 29849138941. The reversal of 29849138920 is 2983194892.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750987 + ... + 789733.

It is an arithmetic number, because the mean of its divisors is an integer number (2098930725).

Almost surely, 2^29849138920 is an apocalyptic number.

29849138920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29849138920 is an abundant number, since it is smaller than the sum of its proper divisors (37316644280).

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

29849138920 is a wasteful number, since it uses less digits than its factorization.

29849138920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58017 (or 58013 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 29849138920 in words is "twenty-nine billion, eight hundred forty-nine million, one hundred thirty-eight thousand, nine hundred twenty".