23280544 has 48 divisors (see below), whose sum is σ = 53621568. Its totient is φ = 9741312.

The previous prime is 23280541. The next prime is 23280553. The reversal of 23280544 is 44508232.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23280541) 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, 8424 + ... + 10840.

It is an arithmetic number, because the mean of its divisors is an integer number (1117116).

Almost surely, 2^23280544 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 23280544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26810784).

23280544 is an abundant number, since it is smaller than the sum of its proper divisors (30341024).

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

23280544 is a wasteful number, since it uses less digits than its factorization.

23280544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 23280544 is about 4824.9916062103. The cubic root of 23280544 is about 285.5383034376.

Adding to 23280544 its reverse (44508232), we get a palindrome (67788776).

The spelling of 23280544 in words is "twenty-three million, two hundred eighty thousand, five hundred forty-four".