32728042518 has 8 divisors (see below), whose sum is σ = 65456085048. Its totient is φ = 10909347504.

The previous prime is 32728042513. The next prime is 32728042519. The reversal of 32728042518 is 81524082723.

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

32728042518 is an admirable number.

It is a super-2 number, since 2×32728042518² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 32728042518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32728042513) 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, 2727336871 + ... + 2727336882.

It is an arithmetic number, because the mean of its divisors is an integer number (8182010631).

Almost surely, 2^32728042518 is an apocalyptic number.

32728042518 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.

32728042518 is a wasteful number, since it uses less digits than its factorization.

32728042518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5454673758.

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 32728042518 in words is "thirty-two billion, seven hundred twenty-eight million, forty-two thousand, five hundred eighteen".