20380719 has 4 divisors (see below), whose sum is σ = 27174296. Its totient is φ = 13587144.

The previous prime is 20380699. The next prime is 20380721. The reversal of 20380719 is 91708302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20380719 - 2⁹ = 20380207 is a prime.

It is a super-2 number, since 2×20380719² = 830747413913922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20380769) 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, 3396784 + ... + 3396789.

It is an arithmetic number, because the mean of its divisors is an integer number (6793574).

Almost surely, 2^20380719 is an apocalyptic number.

20380719 is a deficient number, since it is larger than the sum of its proper divisors (6793577).

20380719 is an equidigital number, since it uses as much as digits as its factorization.

20380719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793576.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 20380719 is about 4514.5009690995. The cubic root of 20380719 is about 273.1533306564.

The spelling of 20380719 in words is "twenty million, three hundred eighty thousand, seven hundred nineteen".