23285409 has 16 divisors (see below), whose sum is σ = 35576832. Its totient is φ = 13270608.

The previous prime is 23285399. The next prime is 23285429. The reversal of 23285409 is 90458232.

It is a happy number.

It is not a de Polignac number, because 23285409 - 2⁵ = 23285377 is a prime.

It is a super-3 number, since 3×23285409³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23285409.

It is not an unprimeable number, because it can be changed into a prime (23285429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8052 + ... + 10554.

It is an arithmetic number, because the mean of its divisors is an integer number (2223552).

Almost surely, 2^23285409 is an apocalyptic number.

It is an amenable number.

23285409 is a deficient number, since it is larger than the sum of its proper divisors (12291423).

23285409 is a wasteful number, since it uses less digits than its factorization.

23285409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 23285409 is about 4825.4957258296. The cubic root of 23285409 is about 285.5581919633.

The spelling of 23285409 in words is "twenty-three million, two hundred eighty-five thousand, four hundred nine".