245405120 has 28 divisors (see below), whose sum is σ = 584371704. Its totient is φ = 98161920.

The previous prime is 245405119. The next prime is 245405123. The reversal of 245405120 is 21504542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245405123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383126 + ... + 383765.

It is an arithmetic number, because the mean of its divisors is an integer number (20870418).

Almost surely, 2^245405120 is an apocalyptic number.

245405120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245405120 is an abundant number, since it is smaller than the sum of its proper divisors (338966584).

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

245405120 is an equidigital number, since it uses as much as digits as its factorization.

245405120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766908 (or 766898 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 245405120 is about 15665.4115809321. The cubic root of 245405120 is about 626.0771781663.

Adding to 245405120 its reverse (21504542), we get a palindrome (266909662).

The spelling of 245405120 in words is "two hundred forty-five million, four hundred five thousand, one hundred twenty".