20169448 has 16 divisors (see below), whose sum is σ = 40726980. Its totient is φ = 9308928.

The previous prime is 20169427. The next prime is 20169481. The reversal of 20169448 is 84496102.

It can be written as a sum of positive squares in 2 ways, for example, as 20052484 + 116964 = 4478^2 + 342^2 .

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, 96865 + ... + 97072.

Almost surely, 2^20169448 is an apocalyptic number.

It is an amenable number.

20169448 is an abundant number, since it is smaller than the sum of its proper divisors (20557532).

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

20169448 is a wasteful number, since it uses less digits than its factorization.

20169448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193956 (or 193952 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 20169448 is about 4491.0408593109. The cubic root of 20169448 is about 272.2061945737.

The spelling of 20169448 in words is "twenty million, one hundred sixty-nine thousand, four hundred forty-eight".