2278911340 has 24 divisors (see below), whose sum is σ = 4789430352. Its totient is φ = 910856640.

The previous prime is 2278911337. The next prime is 2278911347. The reversal of 2278911340 is 431198722.

It is a self number, because there is not a number n which added to its sum of digits gives 2278911340.

It is not an unprimeable number, because it can be changed into a prime (2278911347) 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, 17451 + ... + 69730.

It is an arithmetic number, because the mean of its divisors is an integer number (199559598).

Almost surely, 2^2278911340 is an apocalyptic number.

2278911340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2278911340 is an abundant number, since it is smaller than the sum of its proper divisors (2510519012).

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

2278911340 is a wasteful number, since it uses less digits than its factorization.

2278911340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88497 (or 88495 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2278911340 is about 47737.9444467396. The cubic root of 2278911340 is about 1315.9593571826.

The spelling of 2278911340 in words is "two billion, two hundred seventy-eight million, nine hundred eleven thousand, three hundred forty".