245220210 has 80 divisors (see below), whose sum is σ = 664690752. Its totient is φ = 64864800.

The previous prime is 245220193. The next prime is 245220211. The reversal of 245220210 is 12022542.

245220210 is a `hidden beast` number, since 2 + 452 + 2 + 0 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (245220211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 104955 + ... + 107265.

Almost surely, 2^245220210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332345376).

245220210 is an abundant number, since it is smaller than the sum of its proper divisors (419470542).

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

245220210 is a wasteful number, since it uses less digits than its factorization.

245220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2452 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 245220210 is about 15659.5086129802. The cubic root of 245220210 is about 625.9198912825.

Adding to 245220210 its reverse (12022542), we get a palindrome (257242752).

The spelling of 245220210 in words is "two hundred forty-five million, two hundred twenty thousand, two hundred ten".