72153969 has 8 divisors (see below), whose sum is σ = 96273600. Its totient is φ = 48068496.

The previous prime is 72153953. The next prime is 72153971. The reversal of 72153969 is 96935127.

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

It is not a de Polignac number, because 72153969 - 2⁴ = 72153953 is a prime.

It is a super-2 number, since 2×72153969² = 10412390484905922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 72153969.

It is not an unprimeable number, because it can be changed into a prime (72153979) 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, 3117 + ... + 12410.

It is an arithmetic number, because the mean of its divisors is an integer number (12034200).

Almost surely, 2^72153969 is an apocalyptic number.

It is an amenable number.

72153969 is a deficient number, since it is larger than the sum of its proper divisors (24119631).

72153969 is a wasteful number, since it uses less digits than its factorization.

72153969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17079.

The product of its digits is 102060, while the sum is 42.

The square root of 72153969 is about 8494.3492393473. The cubic root of 72153969 is about 416.3130983173.

The spelling of 72153969 in words is "seventy-two million, one hundred fifty-three thousand, nine hundred sixty-nine".