245231280 has 320 divisors, whose sum is σ = 988032000. Its totient is φ = 55883520.

The previous prime is 245231243. The next prime is 245231281. The reversal of 245231280 is 82132542.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (245231281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 740715 + ... + 741045.

It is an arithmetic number, because the mean of its divisors is an integer number (3087600).

Almost surely, 2^245231280 is an apocalyptic number.

245231280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245231280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494016000).

245231280 is an abundant number, since it is smaller than the sum of its proper divisors (742800720).

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

245231280 is a wasteful number, since it uses less digits than its factorization.

245231280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 245231280 is about 15659.8620683581. The cubic root of 245231280 is about 625.9293097951.

The spelling of 245231280 in words is "two hundred forty-five million, two hundred thirty-one thousand, two hundred eighty".