2288121388 has 24 divisors (see below), whose sum is σ = 4579538432. Its totient is φ = 979917264.

The previous prime is 2288121383. The next prime is 2288121401. The reversal of 2288121388 is 8831218822.

It is not an unprimeable number, because it can be changed into a prime (2288121383) 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, 11131 + ... + 68557.

Almost surely, 2^2288121388 is an apocalyptic number.

2288121388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2288121388 is an abundant number, since it is smaller than the sum of its proper divisors (2291417044).

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

2288121388 is a wasteful number, since it uses less digits than its factorization.

2288121388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58861 (or 58859 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The square root of 2288121388 is about 47834.3118273902. The cubic root of 2288121388 is about 1317.7297577789.

The spelling of 2288121388 in words is "two billion, two hundred eighty-eight million, one hundred twenty-one thousand, three hundred eighty-eight".