29905285922 has 18 divisors (see below), whose sum is σ = 47658474003. Its totient is φ = 14071119232.

The previous prime is 29905285909. The next prime is 29905286017. The reversal of 29905285922 is 22958250992.

It can be written as a sum of positive squares in 5 ways, for example, as 8069608561 + 21835677361 = 89831^2 + 147769^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=122281.

It is a super-2 number, since 2×29905285922² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4153958 + ... + 4161150.

Almost surely, 2^29905285922 is an apocalyptic number.

29905285922 is a deficient number, since it is larger than the sum of its proper divisors (17753188081).

29905285922 is an frugal number, since it uses more digits than its factorization.

29905285922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14422 (or 7212 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 29905285922 in words is "twenty-nine billion, nine hundred five million, two hundred eighty-five thousand, nine hundred twenty-two".