20229897 has 8 divisors (see below), whose sum is σ = 27014080. Its totient is φ = 13466160.

The previous prime is 20229893. The next prime is 20229899. The reversal of 20229897 is 79892202.

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

It is not a de Polignac number, because 20229897 - 2² = 20229893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20229893) 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, 2629 + ... + 6882.

It is an arithmetic number, because the mean of its divisors is an integer number (3376760).

Almost surely, 2^20229897 is an apocalyptic number.

It is an amenable number.

20229897 is a deficient number, since it is larger than the sum of its proper divisors (6784183).

20229897 is an equidigital number, since it uses as much as digits as its factorization.

20229897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 20229897 is about 4497.7657786950. The cubic root of 20229897 is about 272.4778625789.

The spelling of 20229897 in words is "twenty million, two hundred twenty-nine thousand, eight hundred ninety-seven".