28360908 has 96 divisors (see below), whose sum is σ = 78059520. Its totient is φ = 8890560.

The previous prime is 28360903. The next prime is 28360931. The reversal of 28360908 is 80906382.

It is a super-2 number, since 2×28360908² = 1608682205168928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28360903) 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, 143866 + ... + 144062.

It is an arithmetic number, because the mean of its divisors is an integer number (813120).

Almost surely, 2^28360908 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 28360908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39029760).

28360908 is an abundant number, since it is smaller than the sum of its proper divisors (49698612).

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

28360908 is a wasteful number, since it uses less digits than its factorization.

28360908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28360908 is about 5325.4960332348. The cubic root of 28360908 is about 304.9580090897.

The spelling of 28360908 in words is "twenty-eight million, three hundred sixty thousand, nine hundred eight".