28417652505 has 48 divisors (see below), whose sum is σ = 54032247360. Its totient is φ = 13702089600.

The previous prime is 28417652467. The next prime is 28417652513. The reversal of 28417652505 is 50525671482.

28417652505 is a `hidden beast` number, since 2 + 84 + 1 + 7 + 65 + 2 + 505 = 666.

It is not a de Polignac number, because 28417652505 - 2⁷ = 28417652377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68995 + ... + 248184.

It is an arithmetic number, because the mean of its divisors is an integer number (1125671820).

Almost surely, 2^28417652505 is an apocalyptic number.

It is an amenable number.

28417652505 is a deficient number, since it is larger than the sum of its proper divisors (25614594855).

28417652505 is a wasteful number, since it uses less digits than its factorization.

28417652505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317382 (or 317379 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 28417652505 in words is "twenty-eight billion, four hundred seventeen million, six hundred fifty-two thousand, five hundred five".