20445526 has 8 divisors (see below), whose sum is σ = 32472360. Its totient is φ = 9621408.

The previous prime is 20445521. The next prime is 20445533. The reversal of 20445526 is 62554402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20445494 and 20445503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20445521) 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, 300636 + ... + 300703.

It is an arithmetic number, because the mean of its divisors is an integer number (4059045).

Almost surely, 2^20445526 is an apocalyptic number.

20445526 is a deficient number, since it is larger than the sum of its proper divisors (12026834).

20445526 is a wasteful number, since it uses less digits than its factorization.

20445526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601358.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 20445526 is about 4521.6729205019. The cubic root of 20445526 is about 273.4425503786.

Adding to 20445526 its reverse (62554402), we get a palindrome (82999928).

The spelling of 20445526 in words is "twenty million, four hundred forty-five thousand, five hundred twenty-six".