72316019 has 4 divisors (see below), whose sum is σ = 74270544. Its totient is φ = 70361496.

The previous prime is 72315983. The next prime is 72316037. The reversal of 72316019 is 91061327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91061327 = 7 ⋅13008761.

It is a cyclic number.

It is not a de Polignac number, because 72316019 - 2¹² = 72311923 is a prime.

It is a super-2 number, since 2×72316019² = 10459213208016722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72315982 and 72316000.

It is not an unprimeable number, because it can be changed into a prime (72316099) 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, 977207 + ... + 977280.

It is an arithmetic number, because the mean of its divisors is an integer number (18567636).

Almost surely, 2^72316019 is an apocalyptic number.

72316019 is a deficient number, since it is larger than the sum of its proper divisors (1954525).

72316019 is a wasteful number, since it uses less digits than its factorization.

72316019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954524.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 72316019 is about 8503.8825838554. The cubic root of 72316019 is about 416.6245299967.

The spelling of 72316019 in words is "seventy-two million, three hundred sixteen thousand, nineteen".