29220013 has 4 divisors (see below), whose sum is σ = 29771388. Its totient is φ = 28668640.

The previous prime is 29220001. The next prime is 29220029. The reversal of 29220013 is 31002292.

It is a happy number.

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 25583364 + 3636649 = 5058^2 + 1907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29220013 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 (29220053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275608 + ... + 275713.

It is an arithmetic number, because the mean of its divisors is an integer number (7442847).

Almost surely, 2^29220013 is an apocalyptic number.

It is an amenable number.

29220013 is a deficient number, since it is larger than the sum of its proper divisors (551375).

29220013 is an equidigital number, since it uses as much as digits as its factorization.

29220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551374.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 29220013 is about 5405.5539031629. The cubic root of 29220013 is about 308.0066795931.

The spelling of 29220013 in words is "twenty-nine million, two hundred twenty thousand, thirteen".