29420638 has 16 divisors (see below), whose sum is σ = 48237840. Its totient is φ = 13375296.

The previous prime is 29420623. The next prime is 29420639. The reversal of 29420638 is 83602492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29420639) 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, 6703 + ... + 10186.

It is an arithmetic number, because the mean of its divisors is an integer number (3014865).

Almost surely, 2^29420638 is an apocalyptic number.

29420638 is a deficient number, since it is larger than the sum of its proper divisors (18817202).

29420638 is a wasteful number, since it uses less digits than its factorization.

29420638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16971.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 29420638 is about 5424.0794610699. The cubic root of 29420638 is about 308.7099983690.

The spelling of 29420638 in words is "twenty-nine million, four hundred twenty thousand, six hundred thirty-eight".