29929850972 has 24 divisors (see below), whose sum is σ = 59863555584. Its totient is φ = 12826253232.

The previous prime is 29929850971. The next prime is 29929850981. The reversal of 29929850972 is 27905892992.

It is a super-2 number, since 2×29929850972² (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 (29929850971) 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, 640673 + ... + 685799.

It is an arithmetic number, because the mean of its divisors is an integer number (2494314816).

Almost surely, 2^29929850972 is an apocalyptic number.

It is an amenable number.

29929850972 is an abundant number, since it is smaller than the sum of its proper divisors (29933704612).

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

29929850972 is a wasteful number, since it uses less digits than its factorization.

29929850972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68825 (or 68823 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 29929850972 in words is "twenty-nine billion, nine hundred twenty-nine million, eight hundred fifty thousand, nine hundred seventy-two".