20113329 has 16 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 12311040.

The previous prime is 20113319. The next prime is 20113337. The reversal of 20113329 is 92331102.

It is a happy number.

It is not a de Polignac number, because 20113329 - 2⁸ = 20113073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20113319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2719 + ... + 6900.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^20113329 is an apocalyptic number.

It is an amenable number.

20113329 is a deficient number, since it is larger than the sum of its proper divisors (8977551).

20113329 is a wasteful number, since it uses less digits than its factorization.

20113329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9680.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 20113329 is about 4484.7886237815. The cubic root of 20113329 is about 271.9535000167.

Adding to 20113329 its product of nonzero digits (324), we get a triangular number (20113653 = T₆₃₄₂).

It can be divided in two parts, 201 and 13329, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 20113329 in words is "twenty million, one hundred thirteen thousand, three hundred twenty-nine".