2277718440 has 32 divisors (see below), whose sum is σ = 6833155680. Its totient is φ = 607391552.

The previous prime is 2277718381. The next prime is 2277718447. The reversal of 2277718440 is 448177722.

It is a junction number, because it is equal to n+sod(n) for n = 2277718392 and 2277718401.

It is not an unprimeable number, because it can be changed into a prime (2277718447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9490374 + ... + 9490613.

It is an arithmetic number, because the mean of its divisors is an integer number (213536115).

Almost surely, 2^2277718440 is an apocalyptic number.

2277718440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2277718440 is an abundant number, since it is smaller than the sum of its proper divisors (4555437240).

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

2277718440 is a wasteful number, since it uses less digits than its factorization.

2277718440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18981001 (or 18980997 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 42.

The square root of 2277718440 is about 47725.4485573473. The cubic root of 2277718440 is about 1315.7297033891.

The spelling of 2277718440 in words is "two billion, two hundred seventy-seven million, seven hundred eighteen thousand, four hundred forty".