20828527 has 2 divisors, whose sum is σ = 20828528. Its totient is φ = 20828526.

The previous prime is 20828477. The next prime is 20828537. The reversal of 20828527 is 72582802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20828527 - 2⁷ = 20828399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20828492 and 20828501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20828537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10414263 + 10414264.

It is an arithmetic number, because the mean of its divisors is an integer number (10414264).

Almost surely, 2^20828527 is an apocalyptic number.

20828527 is a deficient number, since it is larger than the sum of its proper divisors (1).

20828527 is an equidigital number, since it uses as much as digits as its factorization.

20828527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 20828527 is about 4563.8281080689. The cubic root of 20828527 is about 275.1394422298.

It can be divided in two parts, 2082 and 8527, that added together give a square (10609 = 103²).

The spelling of 20828527 in words is "twenty million, eight hundred twenty-eight thousand, five hundred twenty-seven".