1228847388 has 24 divisors (see below), whose sum is σ = 2881870992. Its totient is φ = 407535744.

The previous prime is 1228847353. The next prime is 1228847407. The reversal of 1228847388 is 8837488221.

1228847388 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1228847388.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257545 + ... + 262272.

It is an arithmetic number, because the mean of its divisors is an integer number (120077958).

Almost surely, 2^1228847388 is an apocalyptic number.

It is an amenable number.

1228847388 is an abundant number, since it is smaller than the sum of its proper divisors (1653023604).

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

1228847388 is a wasteful number, since it uses less digits than its factorization.

1228847388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520021 (or 520019 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 51.

The square root of 1228847388 is about 35054.9195976827. The cubic root of 1228847388 is about 1071.1064886561.

The spelling of 1228847388 in words is "one billion, two hundred twenty-eight million, eight hundred forty-seven thousand, three hundred eighty-eight".