1228569552 has 240 divisors, whose sum is σ = 4143544320. Its totient is φ = 347493888.

The previous prime is 1228569547. The next prime is 1228569577. The reversal of 1228569552 is 2559658221.

1228569552 is a `hidden beast` number, since 12 + 2 + 85 + 6 + 9 + 552 = 666.

1228569552 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1228569498 and 1228569507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2688108 + ... + 2688564.

It is an arithmetic number, because the mean of its divisors is an integer number (17264768).

Almost surely, 2^1228569552 is an apocalyptic number.

1228569552 is a gapful number since it is divisible by the number (12) 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 1228569552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2071772160).

1228569552 is an abundant number, since it is smaller than the sum of its proper divisors (2914974768).

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

1228569552 is a wasteful number, since it uses less digits than its factorization.

1228569552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 596 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 1228569552 is about 35050.9565062068. The cubic root of 1228569552 is about 1071.0257587038.

The spelling of 1228569552 in words is "one billion, two hundred twenty-eight million, five hundred sixty-nine thousand, five hundred fifty-two".