245543040 has 192 divisors, whose sum is σ = 866885760. Its totient is φ = 64014336.

The previous prime is 245543017. The next prime is 245543041. The reversal of 245543040 is 40345542.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 245542995 and 245543013.

It is not an unprimeable number, because it can be changed into a prime (245543041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 270267 + ... + 271173.

It is an arithmetic number, because the mean of its divisors is an integer number (4515030).

Almost surely, 2^245543040 is an apocalyptic number.

245543040 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 245543040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433442880).

245543040 is an abundant number, since it is smaller than the sum of its proper divisors (621342720).

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

245543040 is a wasteful number, since it uses less digits than its factorization.

245543040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 245543040 is about 15669.8130173911. The cubic root of 245543040 is about 626.1944433008.

Adding to 245543040 its reverse (40345542), we get a palindrome (285888582).

The spelling of 245543040 in words is "two hundred forty-five million, five hundred forty-three thousand, forty".