28417895 has 8 divisors (see below), whose sum is σ = 37201680. Its totient is φ = 20667520.

The previous prime is 28417891. The next prime is 28417913. The reversal of 28417895 is 59871482.

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

It is not a de Polignac number, because 28417895 - 2² = 28417891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28417891) 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, 258290 + ... + 258399.

It is an arithmetic number, because the mean of its divisors is an integer number (4650210).

Almost surely, 2^28417895 is an apocalyptic number.

28417895 is a deficient number, since it is larger than the sum of its proper divisors (8783785).

28417895 is a wasteful number, since it uses less digits than its factorization.

28417895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516705.

The product of its digits is 161280, while the sum is 44.

The square root of 28417895 is about 5330.8437418480. The cubic root of 28417895 is about 305.1621282610.

The spelling of 28417895 in words is "twenty-eight million, four hundred seventeen thousand, eight hundred ninety-five".