20290527 has 16 divisors (see below), whose sum is σ = 30179680. Its totient is φ = 13473216.

The previous prime is 20290519. The next prime is 20290553. The reversal of 20290527 is 72509202.

It is a happy number.

It is not a de Polignac number, because 20290527 - 2³ = 20290519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 20290527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20290327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6123 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (1886230).

Almost surely, 2^20290527 is an apocalyptic number.

20290527 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20290527 is a deficient number, since it is larger than the sum of its proper divisors (9889153).

20290527 is a wasteful number, since it uses less digits than its factorization.

20290527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999 (or 2993 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20290527 is about 4504.5007492507. The cubic root of 20290527 is about 272.7498009572.

Adding to 20290527 its reverse (72509202), we get a palindrome (92799729).

The spelling of 20290527 in words is "twenty million, two hundred ninety thousand, five hundred twenty-seven".