28196208 has 40 divisors (see below), whose sum is σ = 80934800. Its totient is φ = 9398592.

The previous prime is 28196173. The next prime is 28196227. The reversal of 28196208 is 80269182.

28196208 is a `hidden beast` number, since 28 + 1 + 9 + 620 + 8 = 666.

It is a super-2 number, since 2×28196208² = 1590052291158528, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32203 + ... + 33066.

It is an arithmetic number, because the mean of its divisors is an integer number (2023370).

Almost surely, 2^28196208 is an apocalyptic number.

It is an amenable number.

28196208 is an abundant number, since it is smaller than the sum of its proper divisors (52738592).

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

28196208 is a wasteful number, since it uses less digits than its factorization.

28196208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65286 (or 65274 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 28196208 is about 5310.0101694818. The cubic root of 28196208 is about 304.3665361866.

The spelling of 28196208 in words is "twenty-eight million, one hundred ninety-six thousand, two hundred eight".