72380213 has 4 divisors (see below), whose sum is σ = 72447648. Its totient is φ = 72312780.

The previous prime is 72380207. The next prime is 72380239. The reversal of 72380213 is 31208327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31208327 = 769 ⋅40583.

It is a cyclic number.

It is not a de Polignac number, because 72380213 - 2¹⁴ = 72363829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72580213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32081 + ... + 34262.

It is an arithmetic number, because the mean of its divisors is an integer number (18111912).

Almost surely, 2^72380213 is an apocalyptic number.

It is an amenable number.

72380213 is a deficient number, since it is larger than the sum of its proper divisors (67435).

72380213 is a wasteful number, since it uses less digits than its factorization.

72380213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67434.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72380213 is about 8507.6561402069. The cubic root of 72380213 is about 416.7477709498.

The spelling of 72380213 in words is "seventy-two million, three hundred eighty thousand, two hundred thirteen".