28206336 has 72 divisors (see below), whose sum is σ = 79061920. Its totient is φ = 8902656.

The previous prime is 28206329. The next prime is 28206337. The reversal of 28206336 is 63360282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28206337) 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, 13626 + ... + 15558.

Almost surely, 2^28206336 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 28206336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39530960).

28206336 is an abundant number, since it is smaller than the sum of its proper divisors (50855584).

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

28206336 is a wasteful number, since it uses less digits than its factorization.

28206336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 28206336 is about 5310.9637543482. The cubic root of 28206336 is about 304.4029743637.

The spelling of 28206336 in words is "twenty-eight million, two hundred six thousand, three hundred thirty-six".