20442526 has 8 divisors (see below), whose sum is σ = 33022584. Its totient is φ = 9435000.

The previous prime is 20442523. The next prime is 20442557. The reversal of 20442526 is 62524402.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20442526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442523) 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 3 ways as a sum of consecutive naturals, for example, 393100 + ... + 393151.

It is an arithmetic number, because the mean of its divisors is an integer number (4127823).

Almost surely, 2^20442526 is an apocalyptic number.

20442526 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20442526 is a deficient number, since it is larger than the sum of its proper divisors (12580058).

20442526 is a wasteful number, since it uses less digits than its factorization.

20442526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786266.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20442526 is about 4521.3411727053. The cubic root of 20442526 is about 273.4291755245.

Adding to 20442526 its reverse (62524402), we get a palindrome (82966928).

The spelling of 20442526 in words is "twenty million, four hundred forty-two thousand, five hundred twenty-six".