20395332 has 18 divisors (see below), whose sum is σ = 51554958. Its totient is φ = 6798432.

The previous prime is 20395313. The next prime is 20395337. The reversal of 20395332 is 23359302.

It can be written as a sum of positive squares in only one way, i.e., 16451136 + 3944196 = 4056^2 + 1986^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 20395296 and 20395305.

It is not an unprimeable number, because it can be changed into a prime (20395337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283233 + ... + 283304.

Almost surely, 2^20395332 is an apocalyptic number.

It is an amenable number.

20395332 is an abundant number, since it is smaller than the sum of its proper divisors (31159626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20395332 is a wasteful number, since it uses less digits than its factorization.

20395332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566547 (or 566542 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 20395332 is about 4516.1191304039. The cubic root of 20395332 is about 273.2185988151.

The spelling of 20395332 in words is "twenty million, three hundred ninety-five thousand, three hundred thirty-two".