245805972 has 48 divisors (see below), whose sum is σ = 600902400. Its totient is φ = 78099840.

The previous prime is 245805929. The next prime is 245805979. The reversal of 245805972 is 279508542.

245805972 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245805979) 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, 23022 + ... + 31962.

It is an arithmetic number, because the mean of its divisors is an integer number (12518800).

Almost surely, 2^245805972 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 245805972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300451200).

245805972 is an abundant number, since it is smaller than the sum of its proper divisors (355096428).

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

245805972 is a wasteful number, since it uses less digits than its factorization.

245805972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9056 (or 9054 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 245805972 is about 15678.2005345001. The cubic root of 245805972 is about 626.4178770736.

The spelling of 245805972 in words is "two hundred forty-five million, eight hundred five thousand, nine hundred seventy-two".