28195406 has 8 divisors (see below), whose sum is σ = 43436280. Its totient is φ = 13716648.

The previous prime is 28195403. The next prime is 28195423. The reversal of 28195406 is 60459182.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28195403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190436 + ... + 190583.

It is an arithmetic number, because the mean of its divisors is an integer number (5429535).

Almost surely, 2^28195406 is an apocalyptic number.

28195406 is a deficient number, since it is larger than the sum of its proper divisors (15240874).

28195406 is a wasteful number, since it uses less digits than its factorization.

28195406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381058.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28195406 is about 5309.9346511986. The cubic root of 28195406 is about 304.3636504053.

The spelling of 28195406 in words is "twenty-eight million, one hundred ninety-five thousand, four hundred six".