2220251436 has 36 divisors (see below), whose sum is σ = 6044019072. Its totient is φ = 683154144.

The previous prime is 2220251431. The next prime is 2220251443. The reversal of 2220251436 is 6341520222.

It is a happy number.

2220251436 is a `hidden beast` number, since 2 + 220 + 2 + 5 + 1 + 436 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (2220251431) 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 11 ways as a sum of consecutive naturals, for example, 2371596 + ... + 2372531.

Almost surely, 2^2220251436 is an apocalyptic number.

2220251436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2220251436 is an abundant number, since it is smaller than the sum of its proper divisors (3823767636).

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

2220251436 is a wasteful number, since it uses less digits than its factorization.

2220251436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744150 (or 4744145 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2220251436 is about 47119.5440979643. The cubic root of 2220251436 is about 1304.5699979329.

Adding to 2220251436 its reverse (6341520222), we get a palindrome (8561771658).

The spelling of 2220251436 in words is "two billion, two hundred twenty million, two hundred fifty-one thousand, four hundred thirty-six".