72244461 has 8 divisors (see below), whose sum is σ = 98929504. Its totient is φ = 46861200.

The previous prime is 72244457. The next prime is 72244463. The reversal of 72244461 is 16444227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72244461 - 2² = 72244457 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 (72244463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325315 + ... + 325536.

It is an arithmetic number, because the mean of its divisors is an integer number (12366188).

Almost surely, 2^72244461 is an apocalyptic number.

It is an amenable number.

72244461 is a deficient number, since it is larger than the sum of its proper divisors (26685043).

72244461 is a wasteful number, since it uses less digits than its factorization.

72244461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650891.

The product of its digits is 10752, while the sum is 30.

The square root of 72244461 is about 8499.6741702256. The cubic root of 72244461 is about 416.4870654931.

Adding to 72244461 its reverse (16444227), we get a palindrome (88688688).

The spelling of 72244461 in words is "seventy-two million, two hundred forty-four thousand, four hundred sixty-one".