72043743 has 16 divisors (see below), whose sum is σ = 100406880. Its totient is φ = 45889536.

The previous prime is 72043733. The next prime is 72043747. The reversal of 72043743 is 34734027.

It is not a de Polignac number, because 72043743 - 2²⁴ = 55266527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72043743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72043747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4171 + ... + 12707.

It is an arithmetic number, because the mean of its divisors is an integer number (6275430).

Almost surely, 2^72043743 is an apocalyptic number.

72043743 is a deficient number, since it is larger than the sum of its proper divisors (28363137).

72043743 is a wasteful number, since it uses less digits than its factorization.

72043743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 72043743 is about 8487.8585638546. The cubic root of 72043743 is about 416.1009967274.

The spelling of 72043743 in words is "seventy-two million, forty-three thousand, seven hundred forty-three".