29231438 has 16 divisors (see below), whose sum is σ = 44600976. Its totient is φ = 14366400.

The previous prime is 29231431. The next prime is 29231441. The reversal of 29231438 is 83413292.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29231431) by changing a digit.

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, 48338 + ... + 48938.

It is an arithmetic number, because the mean of its divisors is an integer number (2787561).

Almost surely, 2^29231438 is an apocalyptic number.

29231438 is a deficient number, since it is larger than the sum of its proper divisors (15369538).

29231438 is a wasteful number, since it uses less digits than its factorization.

29231438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979.

The product of its digits is 10368, while the sum is 32.

The square root of 29231438 is about 5406.6105833507. The cubic root of 29231438 is about 308.0468178114.

The spelling of 29231438 in words is "twenty-nine million, two hundred thirty-one thousand, four hundred thirty-eight".