28297206 has 36 divisors (see below), whose sum is σ = 71322732. Its totient is φ = 8084664.

The previous prime is 28297201. The next prime is 28297219. The reversal of 28297206 is 60279282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28297201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15160 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (1981187).

Almost surely, 2^28297206 is an apocalyptic number.

28297206 is an abundant number, since it is smaller than the sum of its proper divisors (43025526).

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

28297206 is a wasteful number, since it uses less digits than its factorization.

28297206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32105 (or 32095 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28297206 is about 5319.5118197068. The cubic root of 28297206 is about 304.7295138435.

The spelling of 28297206 in words is "twenty-eight million, two hundred ninety-seven thousand, two hundred six".