28336672 has 96 divisors (see below), whose sum is σ = 70785792. Its totient is φ = 10865664.

The previous prime is 28336631. The next prime is 28336681. The reversal of 28336672 is 27663382.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107613 + ... + 107875.

It is an arithmetic number, because the mean of its divisors is an integer number (737352).

Almost surely, 2^28336672 is an apocalyptic number.

28336672 is the 3367-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28336672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35392896).

28336672 is an abundant number, since it is smaller than the sum of its proper divisors (42449120).

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

28336672 is a wasteful number, since it uses less digits than its factorization.

28336672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 322 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 28336672 is about 5323.2200781106. The cubic root of 28336672 is about 304.8711163776.

The spelling of 28336672 in words is "twenty-eight million, three hundred thirty-six thousand, six hundred seventy-two".