245400656 has 40 divisors (see below), whose sum is σ = 512154720. Its totient is φ = 113533056.

The previous prime is 245400611. The next prime is 245400667. The reversal of 245400656 is 656004542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3686 + ... + 22458.

It is an arithmetic number, because the mean of its divisors is an integer number (12803868).

Almost surely, 2^245400656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245400656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256077360).

245400656 is an abundant number, since it is smaller than the sum of its proper divisors (266754064).

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

245400656 is a wasteful number, since it uses less digits than its factorization.

245400656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18843 (or 18837 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 245400656 is about 15665.2691007847. The cubic root of 245400656 is about 626.0733819599.

The spelling of 245400656 in words is "two hundred forty-five million, four hundred thousand, six hundred fifty-six".