72281741 has 4 divisors (see below), whose sum is σ = 82607712. Its totient is φ = 61955772.

The previous prime is 72281731. The next prime is 72281747. The reversal of 72281741 is 14718227.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 72281741 - 2¹⁰ = 72280717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72281698 and 72281707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72281747) 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, 5162975 + ... + 5162988.

It is an arithmetic number, because the mean of its divisors is an integer number (20651928).

Almost surely, 2^72281741 is an apocalyptic number.

It is an amenable number.

72281741 is a deficient number, since it is larger than the sum of its proper divisors (10325971).

72281741 is a wasteful number, since it uses less digits than its factorization.

72281741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10325970.

The product of its digits is 6272, while the sum is 32.

The square root of 72281741 is about 8501.8669126257. The cubic root of 72281741 is about 416.5586925200.

Adding to 72281741 its reverse (14718227), we get a palindrome (86999968).

The spelling of 72281741 in words is "seventy-two million, two hundred eighty-one thousand, seven hundred forty-one".