2273128650 has 384 divisors, whose sum is σ = 7537017600. Its totient is φ = 497664000.

The previous prime is 2273128639. The next prime is 2273128657. The reversal of 2273128650 is 568213722.

2273128650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2273128650² = 10334227718901645000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2273128657) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5668450 + ... + 5668850.

It is an arithmetic number, because the mean of its divisors is an integer number (19627650).

Almost surely, 2^2273128650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2273128650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3768508800).

2273128650 is an abundant number, since it is smaller than the sum of its proper divisors (5263888950).

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

2273128650 is a wasteful number, since it uses less digits than its factorization.

2273128650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 2273128650 is about 47677.3389567832. The cubic root of 2273128650 is about 1314.8453412448.

It can be divided in two parts, 2273128 and 650, that added together give a triangular number (2273778 = T₂₁₃₂).

The spelling of 2273128650 in words is "two billion, two hundred seventy-three million, one hundred twenty-eight thousand, six hundred fifty".