28053285 has 32 divisors (see below), whose sum is σ = 48601728. Its totient is φ = 13735680.

The previous prime is 28053217. The next prime is 28053287. The reversal of 28053285 is 58235082.

It is not a de Polignac number, because 28053285 - 2⁸ = 28053029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28053287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56890 + ... + 57380.

It is an arithmetic number, because the mean of its divisors is an integer number (1518804).

Almost surely, 2^28053285 is an apocalyptic number.

It is an amenable number.

28053285 is a deficient number, since it is larger than the sum of its proper divisors (20548443).

28053285 is a wasteful number, since it uses less digits than its factorization.

28053285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 28053285 is about 5296.5351882150. The cubic root of 28053285 is about 303.8513997015.

The spelling of 28053285 in words is "twenty-eight million, fifty-three thousand, two hundred eighty-five".