245504020 has 12 divisors (see below), whose sum is σ = 515558484. Its totient is φ = 98201600.

The previous prime is 245504011. The next prime is 245504029. The reversal of 245504020 is 20405542.

It is an interprime number because it is at equal distance from previous prime (245504011) and next prime (245504029).

It can be written as a sum of positive squares in 2 ways, for example, as 162256644 + 83247376 = 12738^2 + 9124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 245503982 and 245504000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245504029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6137581 + ... + 6137620.

It is an arithmetic number, because the mean of its divisors is an integer number (42963207).

Almost surely, 2^245504020 is an apocalyptic number.

245504020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245504020 is an abundant number, since it is smaller than the sum of its proper divisors (270054464).

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

245504020 is a wasteful number, since it uses less digits than its factorization.

245504020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12275210 (or 12275208 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 245504020 is about 15668.5678988222. The cubic root of 245504020 is about 626.1612713817.

Adding to 245504020 its reverse (20405542), we get a palindrome (265909562).

The spelling of 245504020 in words is "two hundred forty-five million, five hundred four thousand, twenty".