245040000 has 160 divisors (see below), whose sum is σ = 814145640. Its totient is φ = 65280000.

The previous prime is 245039969. The next prime is 245040001. The reversal of 245040000 is 40542.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245040001) 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 19 ways as a sum of consecutive naturals, for example, 239490 + ... + 240510.

Almost surely, 2^245040000 is an apocalyptic number.

245040000 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 245040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407072820).

245040000 is an abundant number, since it is smaller than the sum of its proper divisors (569105640).

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

245040000 is an equidigital number, since it uses as much as digits as its factorization.

245040000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 245040000 is about 15653.7535434796. The cubic root of 245040000 is about 625.7665261825.

Adding to 245040000 its reverse (40542), we get a palindrome (245080542).

The spelling of 245040000 in words is "two hundred forty-five million, forty thousand".