28374209 has 8 divisors (see below), whose sum is σ = 29568000. Its totient is φ = 27194832.

The previous prime is 28374197. The next prime is 28374217. The reversal of 28374209 is 90247382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28374209 - 2⁸ = 28373953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28374289) 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, 512 + ... + 7550.

It is an arithmetic number, because the mean of its divisors is an integer number (3696000).

Almost surely, 2^28374209 is an apocalyptic number.

28374209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28374209 is a deficient number, since it is larger than the sum of its proper divisors (1193791).

28374209 is a wasteful number, since it uses less digits than its factorization.

28374209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 28374209 is about 5326.7446907093. The cubic root of 28374209 is about 305.0056757880.

The spelling of 28374209 in words is "twenty-eight million, three hundred seventy-four thousand, two hundred nine".