29638013 has 4 divisors (see below), whose sum is σ = 29653500. Its totient is φ = 29622528.

The previous prime is 29638003. The next prime is 29638031. The reversal of 29638013 is 31083692.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15784729 + 13853284 = 3973^2 + 3722^2 .

It is a cyclic number.

It is not a de Polignac number, because 29638013 - 2⁸ = 29637757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29638003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4388 + ... + 8861.

It is an arithmetic number, because the mean of its divisors is an integer number (7413375).

Almost surely, 2^29638013 is an apocalyptic number.

It is an amenable number.

29638013 is a deficient number, since it is larger than the sum of its proper divisors (15487).

29638013 is a wasteful number, since it uses less digits than its factorization.

29638013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15486.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 29638013 is about 5444.0805467958. The cubic root of 29638013 is about 309.4684369409.

The spelling of 29638013 in words is "twenty-nine million, six hundred thirty-eight thousand, thirteen".