20527887 has 4 divisors (see below), whose sum is σ = 27370520. Its totient is φ = 13685256.

The previous prime is 20527877. The next prime is 20527889. The reversal of 20527887 is 78872502.

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

It is not a de Polignac number, because 20527887 - 2⁸ = 20527631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20527889) 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, 3421312 + ... + 3421317.

It is an arithmetic number, because the mean of its divisors is an integer number (6842630).

Almost surely, 2^20527887 is an apocalyptic number.

20527887 is a deficient number, since it is larger than the sum of its proper divisors (6842633).

20527887 is an equidigital number, since it uses as much as digits as its factorization.

20527887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842632.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 20527887 is about 4530.7711264199. The cubic root of 20527887 is about 273.8092292766.

The spelling of 20527887 in words is "twenty million, five hundred twenty-seven thousand, eight hundred eighty-seven".