1228903984 has 160 divisors (see below), whose sum is σ = 3199795200. Its totient is φ = 442886400.

The previous prime is 1228903981. The next prime is 1228903999. The reversal of 1228903984 is 4893098221.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (1228903981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 877717 + ... + 879115.

It is an arithmetic number, because the mean of its divisors is an integer number (19998720).

Almost surely, 2^1228903984 is an apocalyptic number.

1228903984 is a gapful number since it is divisible by the number (14) 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 1228903984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1599897600).

1228903984 is an abundant number, since it is smaller than the sum of its proper divisors (1970891216).

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

1228903984 is a wasteful number, since it uses less digits than its factorization.

1228903984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1228903984 is about 35055.7268359964. The cubic root of 1228903984 is about 1071.1229320900.

The spelling of 1228903984 in words is "one billion, two hundred twenty-eight million, nine hundred three thousand, nine hundred eighty-four".