2489536728 has 192 divisors, whose sum is σ = 8242063200. Its totient is φ = 693826560.

The previous prime is 2489536727. The next prime is 2489536733. The reversal of 2489536728 is 8276359842.

2489536728 is a `hidden beast` number, since 2 + 4 + 89 + 536 + 7 + 28 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2489536727) 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 47 ways as a sum of consecutive naturals, for example, 431076 + ... + 436812.

Almost surely, 2^2489536728 is an apocalyptic number.

2489536728 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 2489536728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4121031600).

2489536728 is an abundant number, since it is smaller than the sum of its proper divisors (5752526472).

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

2489536728 is a wasteful number, since it uses less digits than its factorization.

2489536728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807 (or 5790 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 2489536728 is about 49895.2575702341. The cubic root of 2489536728 is about 1355.3127145965.

The spelling of 2489536728 in words is "two billion, four hundred eighty-nine million, five hundred thirty-six thousand, seven hundred twenty-eight".