20920127 has 4 divisors (see below), whose sum is σ = 21430416. Its totient is φ = 20409840.

The previous prime is 20920117. The next prime is 20920129. The reversal of 20920127 is 72102902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20920127 - 2⁴ = 20920111 is a prime.

It is a super-2 number, since 2×20920127² = 875303427392258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20920129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255083 + ... + 255164.

It is an arithmetic number, because the mean of its divisors is an integer number (5357604).

Almost surely, 2^20920127 is an apocalyptic number.

20920127 is a deficient number, since it is larger than the sum of its proper divisors (510289).

20920127 is an equidigital number, since it uses as much as digits as its factorization.

20920127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510288.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20920127 is about 4573.8525336963. The cubic root of 20920127 is about 275.5421898205.

The spelling of 20920127 in words is "twenty million, nine hundred twenty thousand, one hundred twenty-seven".