20195436 has 24 divisors (see below), whose sum is σ = 47280240. Its totient is φ = 6709312.

The previous prime is 20195429. The next prime is 20195447. The reversal of 20195436 is 63459102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1150 + ... + 6458.

It is an arithmetic number, because the mean of its divisors is an integer number (1970010).

Almost surely, 2^20195436 is an apocalyptic number.

It is an amenable number.

20195436 is an abundant number, since it is smaller than the sum of its proper divisors (27084804).

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

20195436 is a wasteful number, since it uses less digits than its factorization.

20195436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633 (or 5631 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20195436 is about 4493.9332438300. The cubic root of 20195436 is about 272.3230554561.

The spelling of 20195436 in words is "twenty million, one hundred ninety-five thousand, four hundred thirty-six".