20447196 has 48 divisors (see below), whose sum is σ = 59485440. Its totient is φ = 5310720.

The previous prime is 20447191. The next prime is 20447239. The reversal of 20447196 is 69174402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20447191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10141 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (1239280).

Almost surely, 2^20447196 is an apocalyptic number.

It is an amenable number.

20447196 is an abundant number, since it is smaller than the sum of its proper divisors (39038244).

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

20447196 is a wasteful number, since it uses less digits than its factorization.

20447196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22154 (or 22152 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 20447196 is about 4521.8575828967. The cubic root of 20447196 is about 273.4499951471.

The spelling of 20447196 in words is "twenty million, four hundred forty-seven thousand, one hundred ninety-six".