29876643220 has 24 divisors (see below), whose sum is σ = 64075866624. Its totient is φ = 11696387616.

The previous prime is 29876643211. The next prime is 29876643221. The reversal of 29876643220 is 2234667892.

It is a super-2 number, since 2×29876643220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29876643221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15890892 + ... + 15892771.

It is an arithmetic number, because the mean of its divisors is an integer number (2669827776).

Almost surely, 2^29876643220 is an apocalyptic number.

29876643220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29876643220 is an abundant number, since it is smaller than the sum of its proper divisors (34199223404).

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

29876643220 is a wasteful number, since it uses less digits than its factorization.

29876643220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31783719 (or 31783717 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 29876643220 in words is "twenty-nine billion, eight hundred seventy-six million, six hundred forty-three thousand, two hundred twenty".