23280336 has 60 divisors (see below), whose sum is σ = 65503620. Its totient is φ = 7718400.

The previous prime is 23280331. The next prime is 23280371. The reversal of 23280336 is 63308232.

23280336 is a `hidden beast` number, since 2 + 328 + 0 + 336 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9884736 + 13395600 = 3144^2 + 3660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23280331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38436 + ... + 39036.

It is an arithmetic number, because the mean of its divisors is an integer number (1091727).

Almost surely, 2^23280336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23280336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32751810).

23280336 is an abundant number, since it is smaller than the sum of its proper divisors (42223284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23280336 is a wasteful number, since it uses less digits than its factorization.

23280336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 23280336 is about 4824.9700517205. The cubic root of 23280336 is about 285.5374530545.

Adding to 23280336 its reverse (63308232), we get a palindrome (86588568).

The spelling of 23280336 in words is "twenty-three million, two hundred eighty thousand, three hundred thirty-six".