1228873824 has 72 divisors (see below), whose sum is σ = 3542541912. Its totient is φ = 404006400.

The previous prime is 1228873801. The next prime is 1228873871. The reversal of 1228873824 is 4283788221.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 1228873824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8202 + ... + 50249.

It is an arithmetic number, because the mean of its divisors is an integer number (49201971).

Almost surely, 2^1228873824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228873824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1771270956).

1228873824 is an abundant number, since it is smaller than the sum of its proper divisors (2313668088).

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

1228873824 is a wasteful number, since it uses less digits than its factorization.

1228873824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58540 (or 58529 counting only the distinct ones).

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

The square root of 1228873824 is about 35055.2966611324. The cubic root of 1228873824 is about 1071.1141694494.

The spelling of 1228873824 in words is "one billion, two hundred twenty-eight million, eight hundred seventy-three thousand, eight hundred twenty-four".