20797049 has 8 divisors (see below), whose sum is σ = 25596480. Its totient is φ = 16454736.

The previous prime is 20797033. The next prime is 20797057. The reversal of 20797049 is 94079702.

It is a happy number.

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 20797049 - 2⁴ = 20797033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20797349) 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, 114179 + ... + 114360.

It is an arithmetic number, because the mean of its divisors is an integer number (3199560).

Almost surely, 2^20797049 is an apocalyptic number.

It is an amenable number.

20797049 is a deficient number, since it is larger than the sum of its proper divisors (4799431).

20797049 is a wasteful number, since it uses less digits than its factorization.

20797049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228559.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 20797049 is about 4560.3781641438. The cubic root of 20797049 is about 275.0007669400. Note that the first 3 decimals are identical.

The spelling of 20797049 in words is "twenty million, seven hundred ninety-seven thousand, forty-nine".