29128613 has 2 divisors, whose sum is σ = 29128614. Its totient is φ = 29128612.

The previous prime is 29128597. The next prime is 29128621. The reversal of 29128613 is 31682192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17032129 + 12096484 = 4127^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 29128613 - 2⁴ = 29128597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29128613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29128013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14564306 + 14564307.

It is an arithmetic number, because the mean of its divisors is an integer number (14564307).

Almost surely, 2^29128613 is an apocalyptic number.

It is an amenable number.

29128613 is a deficient number, since it is larger than the sum of its proper divisors (1).

29128613 is an equidigital number, since it uses as much as digits as its factorization.

29128613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The square root of 29128613 is about 5397.0930138362. The cubic root of 29128613 is about 307.6851965680.

The spelling of 29128613 in words is "twenty-nine million, one hundred twenty-eight thousand, six hundred thirteen".