72453216 has 48 divisors (see below), whose sum is σ = 207482688. Its totient is φ = 21955200.

The previous prime is 72453211. The next prime is 72453221. The reversal of 72453216 is 61235427.

It is an interprime number because it is at equal distance from previous prime (72453211) and next prime (72453221).

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72453211) 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, 33250 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (4322556).

Almost surely, 2^72453216 is an apocalyptic number.

It is an amenable number.

72453216 is an abundant number, since it is smaller than the sum of its proper divisors (135029472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72453216 is a wasteful number, since it uses less digits than its factorization.

72453216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68635 (or 68627 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 72453216 is about 8511.9454885473. The cubic root of 72453216 is about 416.8878350799.

The spelling of 72453216 in words is "seventy-two million, four hundred fifty-three thousand, two hundred sixteen".