24780256 has 48 divisors (see below), whose sum is σ = 52390800. Its totient is φ = 11501568.

The previous prime is 24780241. The next prime is 24780257. The reversal of 24780256 is 65208742.

It is a super-2 number, since 2×24780256² = 1228122174851072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24780257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31840 + ... + 32608.

It is an arithmetic number, because the mean of its divisors is an integer number (1091475).

Almost surely, 2^24780256 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 24780256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26195400).

24780256 is an abundant number, since it is smaller than the sum of its proper divisors (27610544).

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

24780256 is a wasteful number, since it uses less digits than its factorization.

24780256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 24780256 is about 4977.9770991840. The cubic root of 24780256 is about 291.5425375836.

Adding to 24780256 its reverse (65208742), we get a palindrome (89988998).

The spelling of 24780256 in words is "twenty-four million, seven hundred eighty thousand, two hundred fifty-six".