245662220 has 12 divisors (see below), whose sum is σ = 515890704. Its totient is φ = 98264880.

The previous prime is 245662213. The next prime is 245662237. The reversal of 245662220 is 22266542.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6141536 + ... + 6141575.

It is an arithmetic number, because the mean of its divisors is an integer number (42990892).

Almost surely, 2^245662220 is an apocalyptic number.

245662220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245662220 is an abundant number, since it is smaller than the sum of its proper divisors (270228484).

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

245662220 is a wasteful number, since it uses less digits than its factorization.

245662220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283120 (or 12283118 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 245662220 is about 15673.6154093432. The cubic root of 245662220 is about 626.2957395713.

The spelling of 245662220 in words is "two hundred forty-five million, six hundred sixty-two thousand, two hundred twenty".