20191336 has 32 divisors (see below), whose sum is σ = 41544000. Its totient is φ = 9123840.

The previous prime is 20191333. The next prime is 20191343. The reversal of 20191336 is 63319102.

It is a self number, because there is not a number n which added to its sum of digits gives 20191336.

It is not an unprimeable number, because it can be changed into a prime (20191333) 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, 16936 + ... + 18088.

It is an arithmetic number, because the mean of its divisors is an integer number (1298250).

Almost surely, 2^20191336 is an apocalyptic number.

It is an amenable number.

20191336 is an abundant number, since it is smaller than the sum of its proper divisors (21352664).

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

20191336 is a wasteful number, since it uses less digits than its factorization.

20191336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369 (or 1365 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 20191336 is about 4493.4770501250. The cubic root of 20191336 is about 272.3046255479.

The spelling of 20191336 in words is "twenty million, one hundred ninety-one thousand, three hundred thirty-six".