2478213306 has 60 divisors (see below), whose sum is σ = 5711998842. Its totient is φ = 802494864.

The previous prime is 2478213289. The next prime is 2478213371. The reversal of 2478213306 is 6033128742.

It is a happy number.

2478213306 is a `hidden beast` number, since 247 + 82 + 1 + 330 + 6 = 666.

2478213306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1640979081 + 837234225 = 40509^2 + 28935^2 .

It is a super-2 number, since 2×2478213306² = 12283082380070899272, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3853821 + ... + 3854463.

Almost surely, 2^2478213306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2478213306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2855999421).

2478213306 is an abundant number, since it is smaller than the sum of its proper divisors (3233785536).

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

2478213306 is an frugal number, since it uses more digits than its factorization.

2478213306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2478213306 is about 49781.6563203757. The cubic root of 2478213306 is about 1353.2547541202.

The spelling of 2478213306 in words is "two billion, four hundred seventy-eight million, two hundred thirteen thousand, three hundred six".