72433518 has 8 divisors (see below), whose sum is σ = 144867048. Its totient is φ = 24144504.

The previous prime is 72433513. The next prime is 72433541. The reversal of 72433518 is 81533427.

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

72433518 is an admirable number.

It is a super-2 number, since 2×72433518² = 10493229059712648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72433513) 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, 6036121 + ... + 6036132.

It is an arithmetic number, because the mean of its divisors is an integer number (18108381).

Almost surely, 2^72433518 is an apocalyptic number.

72433518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72433518 is a wasteful number, since it uses less digits than its factorization.

72433518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072258.

The product of its digits is 20160, while the sum is 33.

The square root of 72433518 is about 8510.7883301137. The cubic root of 72433518 is about 416.8500516138.

Subtracting 72433518 from its reverse (81533427), we obtain a palindrome (9099909).

The spelling of 72433518 in words is "seventy-two million, four hundred thirty-three thousand, five hundred eighteen".