20591196 has 24 divisors (see below), whose sum is σ = 48192144. Its totient is φ = 6842880.

The previous prime is 20591191. The next prime is 20591201. The reversal of 20591196 is 69119502.

It is an interprime number because it is at equal distance from previous prime (20591191) and next prime (20591201).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20591191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1806 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (2008006).

Almost surely, 2^20591196 is an apocalyptic number.

It is an amenable number.

20591196 is an abundant number, since it is smaller than the sum of its proper divisors (27600948).

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

20591196 is a wasteful number, since it uses less digits than its factorization.

20591196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221 (or 5219 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 20591196 is about 4537.7523070348. The cubic root of 20591196 is about 274.0904207233.

The spelling of 20591196 in words is "twenty million, five hundred ninety-one thousand, one hundred ninety-six".