20297959 has 8 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 18425400.

The previous prime is 20297903. The next prime is 20297969. The reversal of 20297959 is 95979202.

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 20297959 - 2⁷ = 20297831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20297969) 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, 12792 + ... + 14290.

It is an arithmetic number, because the mean of its divisors is an integer number (2772000).

Almost surely, 2^20297959 is an apocalyptic number.

20297959 is a deficient number, since it is larger than the sum of its proper divisors (1878041).

20297959 is a wasteful number, since it uses less digits than its factorization.

20297959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 20297959 is about 4505.3256264115. The cubic root of 20297959 is about 272.7830977608.

The spelling of 20297959 in words is "twenty million, two hundred ninety-seven thousand, nine hundred fifty-nine".