29920974020 has 24 divisors (see below), whose sum is σ = 71810337984. Its totient is φ = 10258619616.

The previous prime is 29920973989. The next prime is 29920974023. The reversal of 29920974020 is 2047902992.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (29920974023) 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, 106860482 + ... + 106860761.

It is an arithmetic number, because the mean of its divisors is an integer number (2992097416).

Almost surely, 2^29920974020 is an apocalyptic number.

29920974020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29920974020 is an abundant number, since it is smaller than the sum of its proper divisors (41889363964).

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

29920974020 is a wasteful number, since it uses less digits than its factorization.

29920974020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213721259 (or 213721257 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 29920974020 in words is "twenty-nine billion, nine hundred twenty million, nine hundred seventy-four thousand, twenty".