1228283784 has 384 divisors, whose sum is σ = 4366656000. Its totient is φ = 317011968.

The previous prime is 1228283761. The next prime is 1228283809. The reversal of 1228283784 is 4873828221.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10869712 + ... + 10869824.

It is an arithmetic number, because the mean of its divisors is an integer number (11371500).

Almost surely, 2^1228283784 is an apocalyptic number.

1228283784 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 1228283784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2183328000).

1228283784 is an abundant number, since it is smaller than the sum of its proper divisors (3138372216).

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

1228283784 is a wasteful number, since it uses less digits than its factorization.

1228283784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 217 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 1228283784 is about 35046.8798040567. The cubic root of 1228283784 is about 1070.9427112763.

The spelling of 1228283784 in words is "one billion, two hundred twenty-eight million, two hundred eighty-three thousand, seven hundred eighty-four".