2642257220 has 24 divisors (see below), whose sum is σ = 5550527808. Its totient is φ = 1056562400.

The previous prime is 2642257217. The next prime is 2642257253. The reversal of 2642257220 is 227522462.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47825 + ... + 87015.

It is an arithmetic number, because the mean of its divisors is an integer number (231271992).

Almost surely, 2^2642257220 is an apocalyptic number.

2642257220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2642257220 is an abundant number, since it is smaller than the sum of its proper divisors (2908270588).

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

2642257220 is a wasteful number, since it uses less digits than its factorization.

2642257220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42571 (or 42569 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 2642257220 is about 51402.8911638246. The cubic root of 2642257220 is about 1382.4784314079.

Adding to 2642257220 its reverse (227522462), we get a palindrome (2869779682).

The spelling of 2642257220 in words is "two billion, six hundred forty-two million, two hundred fifty-seven thousand, two hundred twenty".