20395828 has 12 divisors (see below), whose sum is σ = 36298080. Its totient is φ = 10024952.

The previous prime is 20395811. The next prime is 20395841. The reversal of 20395828 is 82859302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42976 + ... + 43447.

It is an arithmetic number, because the mean of its divisors is an integer number (3024840).

Almost surely, 2^20395828 is an apocalyptic number.

It is an amenable number.

20395828 is a deficient number, since it is larger than the sum of its proper divisors (15902252).

20395828 is a wasteful number, since it uses less digits than its factorization.

20395828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86486 (or 86484 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 20395828 is about 4516.1740444761. The cubic root of 20395828 is about 273.2208136246.

The spelling of 20395828 in words is "twenty million, three hundred ninety-five thousand, eight hundred twenty-eight".