2623211220 has 48 divisors (see below), whose sum is σ = 8394277248. Its totient is φ = 599591040.

The previous prime is 2623211219. The next prime is 2623211233. The reversal of 2623211220 is 221123262.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 3122451 + ... + 3123290.

It is an arithmetic number, because the mean of its divisors is an integer number (174880776).

Almost surely, 2^2623211220 is an apocalyptic number.

2623211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2623211220 is an abundant number, since it is smaller than the sum of its proper divisors (5771066028).

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

2623211220 is a wasteful number, since it uses less digits than its factorization.

2623211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245760 (or 6245758 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 2623211220 is about 51217.2941495351. The cubic root of 2623211220 is about 1379.1486767743.

Adding to 2623211220 its reverse (221123262), we get a palindrome (2844334482).

The spelling of 2623211220 in words is "two billion, six hundred twenty-three million, two hundred eleven thousand, two hundred twenty".