1228020384 has 48 divisors (see below), whose sum is σ = 3254876352. Its totient is φ = 405362688.

The previous prime is 1228020361. The next prime is 1228020401. The reversal of 1228020384 is 4830208221.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52209 + ... + 71984.

It is an arithmetic number, because the mean of its divisors is an integer number (67809924).

Almost surely, 2^1228020384 is an apocalyptic number.

It is an amenable number.

1228020384 is an abundant number, since it is smaller than the sum of its proper divisors (2026855968).

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

1228020384 is a wasteful number, since it uses less digits than its factorization.

1228020384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124309 (or 124301 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 1228020384 is about 35043.1217787457. The cubic root of 1228020384 is about 1070.8661528348.

The spelling of 1228020384 in words is "one billion, two hundred twenty-eight million, twenty thousand, three hundred eighty-four".