20470527 has 48 divisors (see below), whose sum is σ = 37340160. Its totient is φ = 10497600.

The previous prime is 20470519. The next prime is 20470547. The reversal of 20470527 is 72507402.

It is not a de Polignac number, because 20470527 - 2³ = 20470519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20470527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20470547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75402 + ... + 75672.

It is an arithmetic number, because the mean of its divisors is an integer number (777920).

Almost surely, 2^20470527 is an apocalyptic number.

20470527 is a deficient number, since it is larger than the sum of its proper divisors (16869633).

20470527 is a wasteful number, since it uses less digits than its factorization.

20470527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 20470527 is about 4524.4366500151. The cubic root of 20470527 is about 273.5539611028.

Adding to 20470527 its reverse (72507402), we get a palindrome (92977929).

The spelling of 20470527 in words is "twenty million, four hundred seventy thousand, five hundred twenty-seven".