2445220420 has 24 divisors (see below), whose sum is σ = 5138343000. Its totient is φ = 977444352.

The previous prime is 2445220411. The next prime is 2445220469. The reversal of 2445220420 is 240225442.

It can be written as a sum of positive squares in 4 ways, for example, as 668429316 + 1776791104 = 25854^2 + 42152^2 .

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, 8485 + ... + 70444.

It is an arithmetic number, because the mean of its divisors is an integer number (214097625).

Almost surely, 2^2445220420 is an apocalyptic number.

2445220420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2445220420 is an abundant number, since it is smaller than the sum of its proper divisors (2693122580).

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

2445220420 is a wasteful number, since it uses less digits than its factorization.

2445220420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80487 (or 80485 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 2445220420 is about 49449.1700638140. The cubic root of 2445220420 is about 1347.2225328606. Note that the first 3 decimals are identical.

Adding to 2445220420 its reverse (240225442), we get a palindrome (2685445862).

The spelling of 2445220420 in words is "two billion, four hundred forty-five million, two hundred twenty thousand, four hundred twenty".