23280288 has 48 divisors (see below), whose sum is σ = 61399296. Its totient is φ = 7723520.

The previous prime is 23280281. The next prime is 23280307. The reversal of 23280288 is 88208232.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23280281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26545 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (1279152).

Almost surely, 2^23280288 is an apocalyptic number.

It is an amenable number.

23280288 is an abundant number, since it is smaller than the sum of its proper divisors (38119008).

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

23280288 is a wasteful number, since it uses less digits than its factorization.

23280288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 23280288 is about 4824.9650775938. The cubic root of 23280288 is about 285.5372568115.

The spelling of 23280288 in words is "twenty-three million, two hundred eighty thousand, two hundred eighty-eight".