2481758728 has 8 divisors (see below), whose sum is σ = 4653297630. Its totient is φ = 1240879360.

The previous prime is 2481758711. The next prime is 2481758729. The reversal of 2481758728 is 8278571842.

It can be written as a sum of positive squares in only one way, i.e., 1349974564 + 1131784164 = 36742^2 + 33642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2481758728³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2481758729) 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 as a sum of consecutive naturals, namely, 155109913 + ... + 155109928.

Almost surely, 2^2481758728 is an apocalyptic number.

It is an amenable number.

2481758728 is a deficient number, since it is larger than the sum of its proper divisors (2171538902).

2481758728 is a wasteful number, since it uses less digits than its factorization.

2481758728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310219847 (or 310219843 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 52.

The square root of 2481758728 is about 49817.2533164967. The cubic root of 2481758728 is about 1353.8997850900.

The spelling of 2481758728 in words is "two billion, four hundred eighty-one million, seven hundred fifty-eight thousand, seven hundred twenty-eight".