28614505 has 16 divisors (see below), whose sum is σ = 35554320. Its totient is φ = 22090752.

The previous prime is 28614473. The next prime is 28614517. The reversal of 28614505 is 50541682.

It can be written as a sum of positive squares in 8 ways, for example, as 56169 + 28558336 = 237^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 28614505 - 2⁵ = 28614473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24781 + ... + 25909.

It is an arithmetic number, because the mean of its divisors is an integer number (2222145).

Almost surely, 2^28614505 is an apocalyptic number.

It is an amenable number.

28614505 is a deficient number, since it is larger than the sum of its proper divisors (6939815).

28614505 is a wasteful number, since it uses less digits than its factorization.

28614505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 28614505 is about 5349.2527515532. The cubic root of 28614505 is about 305.8642690500.

The spelling of 28614505 in words is "twenty-eight million, six hundred fourteen thousand, five hundred five".