2285729 has 4 divisors (see below), whose sum is σ = 2299584. Its totient is φ = 2271876.

The previous prime is 2285711. The next prime is 2285741. The reversal of 2285729 is 9275822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2285729 - 2⁸ = 2285473 is a prime.

It is a super-2 number, since 2×2285729² = 10449114122882, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁴ + 8 + 5⁸ + 7⁷ + 2²⁰ + 9⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2285779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6677 + ... + 7010.

It is an arithmetic number, because the mean of its divisors is an integer number (574896).

2^2285729 is an apocalyptic number.

It is an amenable number.

2285729 is a deficient number, since it is larger than the sum of its proper divisors (13855).

2285729 is a wasteful number, since it uses less digits than its factorization.

2285729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13854.

The product of its digits is 20160, while the sum is 35.

The square root of 2285729 is about 1511.8627583217. The cubic root of 2285729 is about 131.7270338647.

The spelling of 2285729 in words is "two million, two hundred eighty-five thousand, seven hundred twenty-nine".