72440241 has 8 divisors (see below), whose sum is σ = 98409600. Its totient is φ = 47382192.

The previous prime is 72440239. The next prime is 72440243. The reversal of 72440241 is 14204427.

It is an interprime number because it is at equal distance from previous prime (72440239) and next prime (72440243).

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

It is not a de Polignac number, because 72440241 - 2¹ = 72440239 is a prime.

It is a super-3 number, since 3×72440241³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (72440243) 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, 227641 + ... + 227958.

It is an arithmetic number, because the mean of its divisors is an integer number (12301200).

Almost surely, 2^72440241 is an apocalyptic number.

It is an amenable number.

72440241 is a deficient number, since it is larger than the sum of its proper divisors (25969359).

72440241 is a wasteful number, since it uses less digits than its factorization.

72440241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455655.

The product of its (nonzero) digits is 1792, while the sum is 24.

The square root of 72440241 is about 8511.1832902364. The cubic root of 72440241 is about 416.8629480200.

Adding to 72440241 its reverse (14204427), we get a palindrome (86644668).

The spelling of 72440241 in words is "seventy-two million, four hundred forty thousand, two hundred forty-one".