23256209 has 8 divisors (see below), whose sum is σ = 24600480. Its totient is φ = 21924000.

The previous prime is 23256203. The next prime is 23256227. The reversal of 23256209 is 90265232.

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 23256209 - 2⁴ = 23256193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23256203) 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, 1109 + ... + 6909.

It is an arithmetic number, because the mean of its divisors is an integer number (3075060).

Almost surely, 2^23256209 is an apocalyptic number.

It is an amenable number.

23256209 is a deficient number, since it is larger than the sum of its proper divisors (1344271).

23256209 is a wasteful number, since it uses less digits than its factorization.

23256209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 23256209 is about 4822.4691808243. The cubic root of 23256209 is about 285.4387783131.

The spelling of 23256209 in words is "twenty-three million, two hundred fifty-six thousand, two hundred nine".