28690365 has 32 divisors (see below), whose sum is σ = 51311232. Its totient is φ = 13568000.

The previous prime is 28690297. The next prime is 28690379. The reversal of 28690365 is 56309682.

It is not a de Polignac number, because 28690365 - 2¹⁰ = 28689341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4645 + ... + 8885.

It is an arithmetic number, because the mean of its divisors is an integer number (1603476).

Almost surely, 2^28690365 is an apocalyptic number.

It is an amenable number.

28690365 is a deficient number, since it is larger than the sum of its proper divisors (22620867).

28690365 is a wasteful number, since it uses less digits than its factorization.

28690365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4301.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 28690365 is about 5356.3387682259. The cubic root of 28690365 is about 306.1343231036.

The spelling of 28690365 in words is "twenty-eight million, six hundred ninety thousand, three hundred sixty-five".