28408895 has 12 divisors (see below), whose sum is σ = 35981640. Its totient is φ = 21529584.

The previous prime is 28408883. The next prime is 28408907. The reversal of 28408895 is 59880482.

It is an interprime number because it is at equal distance from previous prime (28408883) and next prime (28408907).

It is not a de Polignac number, because 28408895 - 2⁴ = 28408879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6065 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (2998470).

Almost surely, 2^28408895 is an apocalyptic number.

28408895 is a deficient number, since it is larger than the sum of its proper divisors (7572745).

28408895 is a wasteful number, since it uses less digits than its factorization.

28408895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15782 (or 15763 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 28408895 is about 5329.9995309568. Note that the first 3 decimals coincide. The cubic root of 28408895 is about 305.1299097224.

The spelling of 28408895 in words is "twenty-eight million, four hundred eight thousand, eight hundred ninety-five".