20820127 has 8 divisors (see below), whose sum is σ = 21992960. Its totient is φ = 19678680.

The previous prime is 20820119. The next prime is 20820131. The reversal of 20820127 is 72102802.

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 20820127 - 2³ = 20820119 is a prime.

It is a super-2 number, since 2×20820127² = 866955376592258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20820098 and 20820107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20820157) 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, 6477 + ... + 9142.

It is an arithmetic number, because the mean of its divisors is an integer number (2749120).

Almost surely, 2^20820127 is an apocalyptic number.

20820127 is a deficient number, since it is larger than the sum of its proper divisors (1172833).

20820127 is a wasteful number, since it uses less digits than its factorization.

20820127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15693.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 20820127 is about 4562.9077352057. The cubic root of 20820127 is about 275.1024499823.

Adding to 20820127 its reverse (72102802), we get a palindrome (92922929).

The spelling of 20820127 in words is "twenty million, eight hundred twenty thousand, one hundred twenty-seven".