72041749 has 16 divisors (see below), whose sum is σ = 82051200. Its totient is φ = 62703936.

The previous prime is 72041743. The next prime is 72041777. The reversal of 72041749 is 94714027.

It is a cyclic number.

It is not a de Polignac number, because 72041749 - 2⁷ = 72041621 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 (72041743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64407 + ... + 65515.

It is an arithmetic number, because the mean of its divisors is an integer number (5128200).

Almost surely, 2^72041749 is an apocalyptic number.

It is an amenable number.

72041749 is a deficient number, since it is larger than the sum of its proper divisors (10009451).

72041749 is a wasteful number, since it uses less digits than its factorization.

72041749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72041749 is about 8487.7411011411. The cubic root of 72041749 is about 416.0971577956.

The spelling of 72041749 in words is "seventy-two million, forty-one thousand, seven hundred forty-nine".