245217792 has 80 divisors (see below), whose sum is σ = 691777152. Its totient is φ = 76922880.

The previous prime is 245217787. The next prime is 245217811. The reversal of 245217792 is 297712542.

It is a self number, because there is not a number n which added to its sum of digits gives 245217792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21417 + ... + 30807.

Almost surely, 2^245217792 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 245217792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345888576).

245217792 is an abundant number, since it is smaller than the sum of its proper divisors (446559360).

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

245217792 is an equidigital number, since it uses as much as digits as its factorization.

245217792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9429 (or 9413 counting only the distinct ones).

The product of its digits is 70560, while the sum is 39.

The square root of 245217792 is about 15659.4314073021. The cubic root of 245217792 is about 625.9178339761.

The spelling of 245217792 in words is "two hundred forty-five million, two hundred seventeen thousand, seven hundred ninety-two".