23206401 has 6 divisors (see below), whose sum is σ = 33520370. Its totient is φ = 15470928.

The previous prime is 23206399. The next prime is 23206433. The reversal of 23206401 is 10460232.

It is a happy number.

23206401 is a `hidden beast` number, since 2 + 3 + 20 + 640 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 10246401 = 3600^2 + 3201^2 .

It is not a de Polignac number, because 23206401 - 2¹ = 23206399 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23206441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1289236 + ... + 1289253.

Almost surely, 2^23206401 is an apocalyptic number.

It is an amenable number.

23206401 is a deficient number, since it is larger than the sum of its proper divisors (10313969).

23206401 is a wasteful number, since it uses less digits than its factorization.

23206401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2578495 (or 2578492 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 23206401 is about 4817.3022533364. The cubic root of 23206401 is about 285.2348571952.

Adding to 23206401 its reverse (10460232), we get a palindrome (33666633).

The spelling of 23206401 in words is "twenty-three million, two hundred six thousand, four hundred one".