2049147720 has 160 divisors (see below), whose sum is σ = 7250126400. Its totient is φ = 517663872.

The previous prime is 2049147713. The next prime is 2049147721. The reversal of 2049147720 is 277419402.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2049147721) 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 39 ways as a sum of consecutive naturals, for example, 44917 + ... + 78203.

It is an arithmetic number, because the mean of its divisors is an integer number (45313290).

Almost surely, 2^2049147720 is an apocalyptic number.

2049147720 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 2049147720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3625063200).

2049147720 is an abundant number, since it is smaller than the sum of its proper divisors (5200978680).

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

2049147720 is a wasteful number, since it uses less digits than its factorization.

2049147720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33329 (or 33316 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 2049147720 is about 45267.5128541430. The cubic root of 2049147720 is about 1270.1580227862.

It can be divided in two parts, 2049 and 147720, that added together give a square (149769 = 387²).

The spelling of 2049147720 in words is "two billion, forty-nine million, one hundred forty-seven thousand, seven hundred twenty".