20532226 has 64 divisors (see below), whose sum is σ = 39626496. Its totient is φ = 7833600.

The previous prime is 20532191. The next prime is 20532227. The reversal of 20532226 is 62223502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20532197 and 20532206.

It is not an unprimeable number, because it can be changed into a prime (20532227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199291 + ... + 199393.

It is an arithmetic number, because the mean of its divisors is an integer number (619164).

Almost surely, 2^20532226 is an apocalyptic number.

20532226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20532226 is the 2266-th decagonal number.

20532226 is a deficient number, since it is larger than the sum of its proper divisors (19094270).

20532226 is a wasteful number, since it uses less digits than its factorization.

20532226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20532226 is about 4531.2499379310. The cubic root of 20532226 is about 273.8285196944.

Adding to 20532226 its reverse (62223502), we get a palindrome (82755728).

The spelling of 20532226 in words is "twenty million, five hundred thirty-two thousand, two hundred twenty-six".