20752226 has 24 divisors (see below), whose sum is σ = 35407260. Its totient is φ = 9104480.

The previous prime is 20752217. The next prime is 20752229. The reversal of 20752226 is 62225702.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 511225 = 4499^2 + 715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20752195 and 20752204.

It is not an unprimeable number, because it can be changed into a prime (20752229) 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, 5540 + ... + 8496.

Almost surely, 2^20752226 is an apocalyptic number.

20752226 is a deficient number, since it is larger than the sum of its proper divisors (14655034).

20752226 is a wasteful number, since it uses less digits than its factorization.

20752226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010 (or 2999 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20752226 is about 4555.4611182623. The cubic root of 20752226 is about 274.8030589945.

Adding to 20752226 its reverse (62225702), we get a palindrome (82977928).

The spelling of 20752226 in words is "twenty million, seven hundred fifty-two thousand, two hundred twenty-six".