28053665 has 8 divisors (see below), whose sum is σ = 33930240. Its totient is φ = 22265712.

The previous prime is 28053631. The next prime is 28053677. The reversal of 28053665 is 56635082.

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

It is a cyclic number.

It is not a de Polignac number, because 28053665 - 2⁸ = 28053409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21455 + ... + 22724.

It is an arithmetic number, because the mean of its divisors is an integer number (4241280).

Almost surely, 2^28053665 is an apocalyptic number.

It is an amenable number.

28053665 is a deficient number, since it is larger than the sum of its proper divisors (5876575).

28053665 is a wasteful number, since it uses less digits than its factorization.

28053665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44311.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 28053665 is about 5296.5710606014. The cubic root of 28053665 is about 303.8527716503.

The spelling of 28053665 in words is "twenty-eight million, fifty-three thousand, six hundred sixty-five".