32450626728 has 128 divisors (see below), whose sum is σ = 98906572800. Its totient is φ = 9796370688.

The previous prime is 32450626727. The next prime is 32450626739. The reversal of 32450626728 is 82762605423.

It is not an unprimeable number, because it can be changed into a prime (32450626727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39801 + ... + 257847.

It is an arithmetic number, because the mean of its divisors is an integer number (772707600).

Almost surely, 2^32450626728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32450626728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49453286400).

32450626728 is an abundant number, since it is smaller than the sum of its proper divisors (66455946072).

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

32450626728 is a wasteful number, since it uses less digits than its factorization.

32450626728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218128 (or 218118 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 32450626728 in words is "thirty-two billion, four hundred fifty million, six hundred twenty-six thousand, seven hundred twenty-eight".