20297135 has 8 divisors (see below), whose sum is σ = 24390240. Its totient is φ = 16215264.

The previous prime is 20297131. The next prime is 20297143. The reversal of 20297135 is 53179202.

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 20297135 - 2² = 20297131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20297098 and 20297107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20297131) 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, 1886 + ... + 6644.

It is an arithmetic number, because the mean of its divisors is an integer number (3048780).

Almost surely, 2^20297135 is an apocalyptic number.

20297135 is a deficient number, since it is larger than the sum of its proper divisors (4093105).

20297135 is an equidigital number, since it uses as much as digits as its factorization.

20297135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 20297135 is about 4505.2341781532. The cubic root of 20297135 is about 272.7794064814.

The spelling of 20297135 in words is "twenty million, two hundred ninety-seven thousand, one hundred thirty-five".