20226449 has 4 divisors (see below), whose sum is σ = 20482560. Its totient is φ = 19970340.

The previous prime is 20226421. The next prime is 20226461. The reversal of 20226449 is 94462202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20226449 - 2¹² = 20222353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20226649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127937 + ... + 128094.

It is an arithmetic number, because the mean of its divisors is an integer number (5120640).

Almost surely, 2^20226449 is an apocalyptic number.

It is an amenable number.

20226449 is a deficient number, since it is larger than the sum of its proper divisors (256111).

20226449 is an equidigital number, since it uses as much as digits as its factorization.

20226449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256110.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 20226449 is about 4497.3824609433. The cubic root of 20226449 is about 272.4623812503.

The spelling of 20226449 in words is "twenty million, two hundred twenty-six thousand, four hundred forty-nine".