20870927 has 24 divisors (see below), whose sum is σ = 26902176. Its totient is φ = 15840000.

The previous prime is 20870909. The next prime is 20870939. The reversal of 20870927 is 72907802.

It is not a de Polignac number, because 20870927 - 2²⁰ = 19822351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20870327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34427 + ... + 35027.

It is an arithmetic number, because the mean of its divisors is an integer number (1120924).

Almost surely, 2^20870927 is an apocalyptic number.

20870927 is a deficient number, since it is larger than the sum of its proper divisors (6031249).

20870927 is a wasteful number, since it uses less digits than its factorization.

20870927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 20870927 is about 4568.4709695915. The cubic root of 20870927 is about 275.3260133574.

The spelling of 20870927 in words is "twenty million, eight hundred seventy thousand, nine hundred twenty-seven".