29171399424 has 72 divisors (see below), whose sum is σ = 82205469360. Its totient is φ = 9151807488.

The previous prime is 29171399419. The next prime is 29171399461. The reversal of 29171399424 is 42499317192.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1104109 + ... + 1130220.

It is an arithmetic number, because the mean of its divisors is an integer number (1141742630).

Almost surely, 2^29171399424 is an apocalyptic number.

29171399424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

29171399424 is an abundant number, since it is smaller than the sum of its proper divisors (53034069936).

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

29171399424 is a wasteful number, since it uses less digits than its factorization.

29171399424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234365 (or 2234351 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The spelling of 29171399424 in words is "twenty-nine billion, one hundred seventy-one million, three hundred ninety-nine thousand, four hundred twenty-four".