209426448 has 80 divisors (see below), whose sum is σ = 674528256. Its totient is φ = 54395520.

The previous prime is 209426447. The next prime is 209426449. The reversal of 209426448 is 844624902.

209426448 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (209426447) and next prime (209426449).

It is not an unprimeable number, because it can be changed into a prime (209426443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24636 + ... + 32027.

Almost surely, 2^209426448 is an apocalyptic number.

209426448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

209426448 is an abundant number, since it is smaller than the sum of its proper divisors (465101808).

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

209426448 is a wasteful number, since it uses less digits than its factorization.

209426448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56692 (or 56686 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 209426448 is about 14471.5737914022. The cubic root of 209426448 is about 593.8505672239.

The spelling of 209426448 in words is "two hundred nine million, four hundred twenty-six thousand, four hundred forty-eight".