72073343 has 4 divisors (see below), whose sum is σ = 72115680. Its totient is φ = 72031008.

The previous prime is 72073303. The next prime is 72073349. The reversal of 72073343 is 34337027.

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 72073343 - 2⁸ = 72073087 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 (72073349) 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, 18503 + ... + 22056.

It is an arithmetic number, because the mean of its divisors is an integer number (18028920).

Almost surely, 2^72073343 is an apocalyptic number.

72073343 is a deficient number, since it is larger than the sum of its proper divisors (42337).

72073343 is a wasteful number, since it uses less digits than its factorization.

72073343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42336.

The product of its (nonzero) digits is 10584, while the sum is 29.

The square root of 72073343 is about 8489.6020519221. The cubic root of 72073343 is about 416.1579755505.

The spelling of 72073343 in words is "seventy-two million, seventy-three thousand, three hundred forty-three".