2765351220 has 48 divisors (see below), whose sum is σ = 7907735808. Its totient is φ = 721736320.

The previous prime is 2765351209. The next prime is 2765351221. The reversal of 2765351220 is 221535672.

2765351220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2765351221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487491 + ... + 493130.

It is an arithmetic number, because the mean of its divisors is an integer number (164744496).

Almost surely, 2^2765351220 is an apocalyptic number.

2765351220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2765351220 is an abundant number, since it is smaller than the sum of its proper divisors (5142384588).

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

2765351220 is a wasteful number, since it uses less digits than its factorization.

2765351220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980680 (or 980678 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 2765351220 is about 52586.6068500336. The cubic root of 2765351220 is about 1403.6217822794.

Adding to 2765351220 its reverse (221535672), we get a palindrome (2986886892).

The spelling of 2765351220 in words is "two billion, seven hundred sixty-five million, three hundred fifty-one thousand, two hundred twenty".