20748527 has 4 divisors (see below), whose sum is σ = 21309336. Its totient is φ = 20187720.

The previous prime is 20748523. The next prime is 20748547. The reversal of 20748527 is 72584702.

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 20748527 - 2² = 20748523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20748523) 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, 280349 + ... + 280422.

It is an arithmetic number, because the mean of its divisors is an integer number (5327334).

Almost surely, 2^20748527 is an apocalyptic number.

20748527 is a deficient number, since it is larger than the sum of its proper divisors (560809).

20748527 is an equidigital number, since it uses as much as digits as its factorization.

20748527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560808.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 20748527 is about 4555.0551039477. The cubic root of 20748527 is about 274.7867305146.

It can be divided in two parts, 2074 and 8527, that added together give a palindrome (10601).

The spelling of 20748527 in words is "twenty million, seven hundred forty-eight thousand, five hundred twenty-seven".