20145326 has 4 divisors (see below), whose sum is σ = 30217992. Its totient is φ = 10072662.

The previous prime is 20145317. The next prime is 20145329. The reversal of 20145326 is 62354102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20145329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5036330 + ... + 5036333.

It is an arithmetic number, because the mean of its divisors is an integer number (7554498).

Almost surely, 2^20145326 is an apocalyptic number.

20145326 is a deficient number, since it is larger than the sum of its proper divisors (10072666).

20145326 is a wasteful number, since it uses less digits than its factorization.

20145326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072665.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20145326 is about 4488.3544868916. The cubic root of 20145326 is about 272.0976347161.

Adding to 20145326 its reverse (62354102), we get a palindrome (82499428).

The spelling of 20145326 in words is "twenty million, one hundred forty-five thousand, three hundred twenty-six".