2236722436 has 81 divisors (see below), whose sum is σ = 4544986719. Its totient is φ = 962527488.

The previous prime is 2236722373. The next prime is 2236722493. The reversal of 2236722436 is 6342276322.

The square root of 2236722436 is 47294.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 20196036 + 2216526400 = 4494^2 + 47080^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2236722395 and 2236722404.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 20903895 + ... + 20904001.

Almost surely, 2^2236722436 is an apocalyptic number.

2236722436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2236722436 is the 47294-th square number.

It is an amenable number.

2236722436 is an abundant number, since it is smaller than the sum of its proper divisors (2308264283).

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

2236722436 is a wasteful number, since it uses less digits than its factorization.

2236722436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 139 counting only the distinct ones).

The product of its digits is 145152, while the sum is 37.

The cubic root of 2236722436 is about 1307.7880501183.

Adding to 2236722436 its reverse (6342276322), we get a palindrome (8578998758).

The spelling of 2236722436 in words is "two billion, two hundred thirty-six million, seven hundred twenty-two thousand, four hundred thirty-six".