245821472 has 48 divisors (see below), whose sum is σ = 522567360. Its totient is φ = 113156352.

The previous prime is 245821439. The next prime is 245821481. The reversal of 245821472 is 274128542.

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, 267029 + ... + 267947.

It is an arithmetic number, because the mean of its divisors is an integer number (10886820).

Almost surely, 2^245821472 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 245821472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261283680).

245821472 is an abundant number, since it is smaller than the sum of its proper divisors (276745888).

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

245821472 is a wasteful number, since it uses less digits than its factorization.

245821472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1577 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 245821472 is about 15678.6948436405. The cubic root of 245821472 is about 626.4310436550.

The spelling of 245821472 in words is "two hundred forty-five million, eight hundred twenty-one thousand, four hundred seventy-two".