285746253 has 8 divisors (see below), whose sum is σ = 410302368. Its totient is φ = 175843824.

The previous prime is 285746231. The next prime is 285746257. The reversal of 285746253 is 352647582.

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

It is not a de Polignac number, because 285746253 - 2¹⁸ = 285484109 is a prime.

It is a super-2 number, since 2×285746253² = 163301842207080018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285746257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3663375 + ... + 3663452.

It is an arithmetic number, because the mean of its divisors is an integer number (51287796).

Almost surely, 2^285746253 is an apocalyptic number.

It is an amenable number.

285746253 is a deficient number, since it is larger than the sum of its proper divisors (124556115).

285746253 is a wasteful number, since it uses less digits than its factorization.

285746253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7326843.

The product of its digits is 403200, while the sum is 42.

The square root of 285746253 is about 16904.0306731856. The cubic root of 285746253 is about 658.6583189480.

The spelling of 285746253 in words is "two hundred eighty-five million, seven hundred forty-six thousand, two hundred fifty-three".