20145592 has 8 divisors (see below), whose sum is σ = 37773000. Its totient is φ = 10072792.

The previous prime is 20145589. The next prime is 20145607. The reversal of 20145592 is 29554102.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20145592.

It is a congruent number.

It is an unprimeable number.

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, 1259092 + ... + 1259107.

It is an arithmetic number, because the mean of its divisors is an integer number (4721625).

Almost surely, 2^20145592 is an apocalyptic number.

It is an amenable number.

20145592 is a deficient number, since it is larger than the sum of its proper divisors (17627408).

20145592 is a wasteful number, since it uses less digits than its factorization.

20145592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518205 (or 2518201 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 20145592 is about 4488.3841190344. The cubic root of 20145592 is about 272.0988323083.

Adding to 20145592 its reverse (29554102), we get a palindrome (49699694).

The spelling of 20145592 in words is "twenty million, one hundred forty-five thousand, five hundred ninety-two".