2273635644 has 96 divisors (see below), whose sum is σ = 6289414656. Its totient is φ = 625708800.

The previous prime is 2273635633. The next prime is 2273635717. The reversal of 2273635644 is 4465363722.

2273635644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2273635596 and 2273635605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310287 + ... + 317529.

It is an arithmetic number, because the mean of its divisors is an integer number (65514736).

Almost surely, 2^2273635644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2273635644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144707328).

2273635644 is an abundant number, since it is smaller than the sum of its proper divisors (4015779012).

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

2273635644 is a wasteful number, since it uses less digits than its factorization.

2273635644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395 (or 7393 counting only the distinct ones).

The product of its digits is 725760, while the sum is 42.

The square root of 2273635644 is about 47682.6555887987. The cubic root of 2273635644 is about 1314.9430874567.

The spelling of 2273635644 in words is "two billion, two hundred seventy-three million, six hundred thirty-five thousand, six hundred forty-four".