20395552 has 24 divisors (see below), whose sum is σ = 40257756. Its totient is φ = 10171392.

The previous prime is 20395541. The next prime is 20395559. The reversal of 20395552 is 25559302.

It can be written as a sum of positive squares in 2 ways, for example, as 20394256 + 1296 = 4516^2 + 36^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20395559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19228 + ... + 20260.

Almost surely, 2^20395552 is an apocalyptic number.

It is an amenable number.

20395552 is a deficient number, since it is larger than the sum of its proper divisors (19862204).

20395552 is a wasteful number, since it uses less digits than its factorization.

20395552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1652 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 20395552 is about 4516.1434875345. The cubic root of 20395552 is about 273.2195811947.

The spelling of 20395552 in words is "twenty million, three hundred ninety-five thousand, five hundred fifty-two".