72328043 has 4 divisors (see below), whose sum is σ = 72652608. Its totient is φ = 72003480.

The previous prime is 72328037. The next prime is 72328049. The reversal of 72328043 is 34082327.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34082327 = 3637 ⋅9371.

It is an interprime number because it is at equal distance from previous prime (72328037) and next prime (72328049).

It is a cyclic number.

It is not a de Polignac number, because 72328043 - 2¹⁶ = 72262507 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72327997 and 72328015.

It is not an unprimeable number, because it can be changed into a prime (72328049) 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, 161948 + ... + 162393.

It is an arithmetic number, because the mean of its divisors is an integer number (18163152).

Almost surely, 2^72328043 is an apocalyptic number.

72328043 is a deficient number, since it is larger than the sum of its proper divisors (324565).

72328043 is a wasteful number, since it uses less digits than its factorization.

72328043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324564.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 72328043 is about 8504.5895256620. The cubic root of 72328043 is about 416.6476194671.

The spelling of 72328043 in words is "seventy-two million, three hundred twenty-eight thousand, forty-three".