20244729 has 8 divisors (see below), whose sum is σ = 27450720. Its totient is φ = 13267616.

The previous prime is 20244713. The next prime is 20244751. The reversal of 20244729 is 92744202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20244729 - 2⁴ = 20244713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20244696 and 20244705.

It is not an unprimeable number, because it can be changed into a prime (20244799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57012 + ... + 57365.

It is an arithmetic number, because the mean of its divisors is an integer number (3431340).

Almost surely, 2^20244729 is an apocalyptic number.

It is an amenable number.

20244729 is a deficient number, since it is larger than the sum of its proper divisors (7205991).

20244729 is a wasteful number, since it uses less digits than its factorization.

20244729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114439.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20244729 is about 4499.4142952167. The cubic root of 20244729 is about 272.5444373846.

The spelling of 20244729 in words is "twenty million, two hundred forty-four thousand, seven hundred twenty-nine".