245200420 has 24 divisors (see below), whose sum is σ = 516411000. Its totient is φ = 97796352.

The previous prime is 245200409. The next prime is 245200433. The reversal of 245200420 is 24002542.

It can be written as a sum of positive squares in 4 ways, for example, as 7485696 + 237714724 = 2736^2 + 15418^2 .

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, 10585 + ... + 24544.

It is an arithmetic number, because the mean of its divisors is an integer number (21517125).

Almost surely, 2^245200420 is an apocalyptic number.

245200420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245200420 is an abundant number, since it is smaller than the sum of its proper divisors (271210580).

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

245200420 is a wasteful number, since it uses less digits than its factorization.

245200420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35487 (or 35485 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 245200420 is about 15658.8767157801. The cubic root of 245200420 is about 625.9030529641.

Adding to 245200420 its reverse (24002542), we get a palindrome (269202962).

The spelling of 245200420 in words is "two hundred forty-five million, two hundred thousand, four hundred twenty".