28329672 has 32 divisors (see below), whose sum is σ = 80942400. Its totient is φ = 8094144.

The previous prime is 28329671. The next prime is 28329689. The reversal of 28329672 is 27692382.

It is a self number, because there is not a number n which added to its sum of digits gives 28329672.

It is not an unprimeable number, because it can be changed into a prime (28329671) 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, 84147 + ... + 84482.

It is an arithmetic number, because the mean of its divisors is an integer number (2529450).

Almost surely, 2^28329672 is an apocalyptic number.

It is an amenable number.

28329672 is an abundant number, since it is smaller than the sum of its proper divisors (52612728).

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

28329672 is a wasteful number, since it uses less digits than its factorization.

28329672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168645 (or 168641 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 28329672 is about 5322.5625407317. The cubic root of 28329672 is about 304.8460102352.

The spelling of 28329672 in words is "twenty-eight million, three hundred twenty-nine thousand, six hundred seventy-two".