2265949728 has 432 divisors, whose sum is σ = 8208738720. Its totient is φ = 611380224.

The previous prime is 2265949691. The next prime is 2265949729. The reversal of 2265949728 is 8279495622.

2265949728 is a `hidden beast` number, since 2 + 26 + 594 + 9 + 7 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2265949729) 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 71 ways as a sum of consecutive naturals, for example, 7239300 + ... + 7239612.

It is an arithmetic number, because the mean of its divisors is an integer number (19001710).

Almost surely, 2^2265949728 is an apocalyptic number.

2265949728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2265949728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4104369360).

2265949728 is an abundant number, since it is smaller than the sum of its proper divisors (5942788992).

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

2265949728 is a wasteful number, since it uses less digits than its factorization.

2265949728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 344 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 2265949728 is about 47601.9928994575. The cubic root of 2265949728 is about 1313.4597140757.

The spelling of 2265949728 in words is "two billion, two hundred sixty-five million, nine hundred forty-nine thousand, seven hundred twenty-eight".