20395100 has 36 divisors (see below), whose sum is σ = 48283368. Its totient is φ = 7416000.

The previous prime is 20395093. The next prime is 20395129. The reversal of 20395100 is 159302.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 in 11 ways as a sum of consecutive naturals, for example, 8171 + ... + 10370.

Almost surely, 2^20395100 is an apocalyptic number.

20395100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20395100 is an abundant number, since it is smaller than the sum of its proper divisors (27888268).

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

20395100 is a wasteful number, since it uses less digits than its factorization.

20395100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18566 (or 18559 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 20395100 is about 4516.0934445602. The cubic root of 20395100 is about 273.2175628435.

The spelling of 20395100 in words is "twenty million, three hundred ninety-five thousand, one hundred".