72003719 has 4 divisors (see below), whose sum is σ = 72321144. Its totient is φ = 71686296.

The previous prime is 72003709. The next prime is 72003751. The reversal of 72003719 is 91730027.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72003719 - 2⁴ = 72003703 is a prime.

It is a super-2 number, since 2×72003719² = 10369071099661922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72003691 and 72003700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72003709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158372 + ... + 158825.

It is an arithmetic number, because the mean of its divisors is an integer number (18080286).

Almost surely, 2^72003719 is an apocalyptic number.

72003719 is a deficient number, since it is larger than the sum of its proper divisors (317425).

72003719 is a wasteful number, since it uses less digits than its factorization.

72003719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317424.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 72003719 is about 8485.5005155854. The cubic root of 72003719 is about 416.0239272942.

The spelling of 72003719 in words is "seventy-two million, three thousand, seven hundred nineteen".