20719086 has 8 divisors (see below), whose sum is σ = 41438184. Its totient is φ = 6906360.

The previous prime is 20719019. The next prime is 20719087. The reversal of 20719086 is 68091702.

It is a sphenic number, since it is the product of 3 distinct primes.

20719086 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20719087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1726585 + ... + 1726596.

It is an arithmetic number, because the mean of its divisors is an integer number (5179773).

Almost surely, 2^20719086 is an apocalyptic number.

20719086 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20719086 is a wasteful number, since it uses less digits than its factorization.

20719086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453186.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 20719086 is about 4551.8222724531. The cubic root of 20719086 is about 274.6566999897.

The spelling of 20719086 in words is "twenty million, seven hundred nineteen thousand, eighty-six".