29968135 has 4 divisors (see below), whose sum is σ = 35961768. Its totient is φ = 23974504.

The previous prime is 29968123. The next prime is 29968153. The reversal of 29968135 is 53186992.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29968135 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29968091 and 29968100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2996809 + ... + 2996818.

It is an arithmetic number, because the mean of its divisors is an integer number (8990442).

Almost surely, 2^29968135 is an apocalyptic number.

29968135 is a deficient number, since it is larger than the sum of its proper divisors (5993633).

29968135 is an equidigital number, since it uses as much as digits as its factorization.

29968135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993632.

The product of its digits is 116640, while the sum is 43.

The square root of 29968135 is about 5474.3159390010. The cubic root of 29968135 is about 310.6131983285.

It can be divided in two parts, 29968 and 135, that added together give a palindrome (30103).

The spelling of 29968135 in words is "twenty-nine million, nine hundred sixty-eight thousand, one hundred thirty-five".