29131938 has 48 divisors (see below), whose sum is σ = 71862336. Its totient is φ = 8442720.

The previous prime is 29131903. The next prime is 29131943. The reversal of 29131938 is 83913192.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1356 + ... + 7752.

It is an arithmetic number, because the mean of its divisors is an integer number (1497132).

Almost surely, 2^29131938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29131938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35931168).

29131938 is an abundant number, since it is smaller than the sum of its proper divisors (42730398).

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

29131938 is a wasteful number, since it uses less digits than its factorization.

29131938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6436 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 29131938 is about 5397.4010412420. The cubic root of 29131938 is about 307.6969034346.

It can be divided in two parts, 2913 and 1938, that added together give a triangular number (4851 = T₉₈).

The spelling of 29131938 in words is "twenty-nine million, one hundred thirty-one thousand, nine hundred thirty-eight".