28206672 has 80 divisors (see below), whose sum is σ = 83119680. Its totient is φ = 8165376.

The previous prime is 28206643. The next prime is 28206701. The reversal of 28206672 is 27660282.

It is an interprime number because it is at equal distance from previous prime (28206643) and next prime (28206701).

It is a congruent number.

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, 9279 + ... + 11937.

It is an arithmetic number, because the mean of its divisors is an integer number (1038996).

Almost surely, 2^28206672 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 28206672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41559840).

28206672 is an abundant number, since it is smaller than the sum of its proper divisors (54913008).

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

28206672 is a wasteful number, since it uses less digits than its factorization.

28206672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700 (or 2694 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 28206672 is about 5310.9953869308. The cubic root of 28206672 is about 304.4041830637.

The spelling of 28206672 in words is "twenty-eight million, two hundred six thousand, six hundred seventy-two".