20648226 has 8 divisors (see below), whose sum is σ = 41296464. Its totient is φ = 6882740.

The previous prime is 20648219. The next prime is 20648233. The reversal of 20648226 is 62284602.

It is an interprime number because it is at equal distance from previous prime (20648219) and next prime (20648233).

It is a sphenic number, since it is the product of 3 distinct primes.

20648226 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20648193 and 20648202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720680 + ... + 1720691.

It is an arithmetic number, because the mean of its divisors is an integer number (5162058).

Almost surely, 2^20648226 is an apocalyptic number.

20648226 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20648226 is a wasteful number, since it uses less digits than its factorization.

20648226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441376.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20648226 is about 4544.0319100992. The cubic root of 20648226 is about 274.3432305133.

The spelling of 20648226 in words is "twenty million, six hundred forty-eight thousand, two hundred twenty-six".