2764261220 has 48 divisors (see below), whose sum is σ = 6644792448. Its totient is φ = 946237440.

The previous prime is 2764261211. The next prime is 2764261267. The reversal of 2764261220 is 221624672.

It is a super-2 number, since 2×2764261220² = 15282280184791776800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74339 + ... + 105141.

It is an arithmetic number, because the mean of its divisors is an integer number (138433176).

Almost surely, 2^2764261220 is an apocalyptic number.

2764261220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2764261220 is an abundant number, since it is smaller than the sum of its proper divisors (3880531228).

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

2764261220 is a wasteful number, since it uses less digits than its factorization.

2764261220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31460 (or 31458 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 2764261220 is about 52576.2419729672. The cubic root of 2764261220 is about 1403.4373393062.

Adding to 2764261220 its reverse (221624672), we get a palindrome (2985885892).

The spelling of 2764261220 in words is "two billion, seven hundred sixty-four million, two hundred sixty-one thousand, two hundred twenty".