2708249780 has 24 divisors (see below), whose sum is σ = 5841037608. Its totient is φ = 1054021248.

The previous prime is 2708249749. The next prime is 2708249827. The reversal of 2708249780 is 879428072.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 878292496 + 1829957284 = 29636^2 + 42778^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1829159 + ... + 1830638.

It is an arithmetic number, because the mean of its divisors is an integer number (243376567).

Almost surely, 2^2708249780 is an apocalyptic number.

2708249780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2708249780 is an abundant number, since it is smaller than the sum of its proper divisors (3132787828).

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

2708249780 is a wasteful number, since it uses less digits than its factorization.

2708249780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659843 (or 3659841 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 2708249780 is about 52040.8472260012. The cubic root of 2708249780 is about 1393.8934335148.

The spelling of 2708249780 in words is "two billion, seven hundred eight million, two hundred forty-nine thousand, seven hundred eighty".