2276643840 has 352 divisors, whose sum is σ = 7958736000. Its totient is φ = 553254912.

The previous prime is 2276643829. The next prime is 2276643871. The reversal of 2276643840 is 483466722.

It is a junction number, because it is equal to n+sod(n) for n = 2276643792 and 2276643801.

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, 8463226 + ... + 8463494.

Almost surely, 2^2276643840 is an apocalyptic number.

2276643840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2276643840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3979368000).

2276643840 is an abundant number, since it is smaller than the sum of its proper divisors (5682092160).

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

2276643840 is a wasteful number, since it uses less digits than its factorization.

2276643840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 2276643840 is about 47714.1890845899. The cubic root of 2276643840 is about 1315.5227557226.

The spelling of 2276643840 in words is "two billion, two hundred seventy-six million, six hundred forty-three thousand, eight hundred forty".