245004020 has 24 divisors (see below), whose sum is σ = 514888584. Its totient is φ = 97929216.

The previous prime is 245004013. The next prime is 245004029. The reversal of 245004020 is 20400542.

It can be written as a sum of positive squares in 4 ways, for example, as 456976 + 244547044 = 676^2 + 15638^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 245004020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245004029) 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 7 ways as a sum of consecutive naturals, for example, 29444 + ... + 36836.

It is an arithmetic number, because the mean of its divisors is an integer number (21453691).

Almost surely, 2^245004020 is an apocalyptic number.

245004020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245004020 is an abundant number, since it is smaller than the sum of its proper divisors (269884564).

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

245004020 is a wasteful number, since it uses less digits than its factorization.

245004020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9059 (or 9057 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 245004020 is about 15652.6042561613. The cubic root of 245004020 is about 625.7358969224.

Adding to 245004020 its reverse (20400542), we get a palindrome (265404562).

The spelling of 245004020 in words is "two hundred forty-five million, four thousand, twenty".