20152844 has 12 divisors (see below), whose sum is σ = 37123800. Its totient is φ = 9546048.

The previous prime is 20152841. The next prime is 20152861. The reversal of 20152844 is 44825102.

It is a happy number.

It is a super-2 number, since 2×20152844² = 812274242576672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20152841) 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, 132509 + ... + 132660.

It is an arithmetic number, because the mean of its divisors is an integer number (3093650).

Almost surely, 2^20152844 is an apocalyptic number.

It is an amenable number.

20152844 is a deficient number, since it is larger than the sum of its proper divisors (16970956).

20152844 is a wasteful number, since it uses less digits than its factorization.

20152844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265192 (or 265190 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 20152844 is about 4489.1919094643. The cubic root of 20152844 is about 272.1314783912.

Adding to 20152844 its reverse (44825102), we get a palindrome (64977946).

The spelling of 20152844 in words is "twenty million, one hundred fifty-two thousand, eight hundred forty-four".