2749349280 has 96 divisors (see below), whose sum is σ = 8746351488. Its totient is φ = 725888000.

The previous prime is 2749349257. The next prime is 2749349299. The reversal of 2749349280 is 829439472.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20125 + ... + 76835.

It is an arithmetic number, because the mean of its divisors is an integer number (91107828).

Almost surely, 2^2749349280 is an apocalyptic number.

2749349280 is a gapful number since it is divisible by the number (20) 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 2749349280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4373175744).

2749349280 is an abundant number, since it is smaller than the sum of its proper divisors (5997002208).

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

2749349280 is a wasteful number, since it uses less digits than its factorization.

2749349280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56830 (or 56822 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 2749349280 is about 52434.2376696753. The cubic root of 2749349280 is about 1400.9091509720.

The spelling of 2749349280 in words is "two billion, seven hundred forty-nine million, three hundred forty-nine thousand, two hundred eighty".