1229115456 has 84 divisors (see below), whose sum is σ = 3531924864. Its totient is φ = 408672000.

The previous prime is 1229115443. The next prime is 1229115457. The reversal of 1229115456 is 6545119221.

1229115456 is a `hidden beast` number, since 1 + 22 + 91 + 1 + 545 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (21600) is a multiple of the sum of its prime factors (5400).

It is a self number, because there is not a number n which added to its sum of digits gives 1229115456.

It is not an unprimeable number, because it can be changed into a prime (1229115457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 245781 + ... + 250731.

Almost surely, 2^1229115456 is an apocalyptic number.

1229115456 is a gapful number since it is divisible by the number (16) 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 1229115456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1765962432).

1229115456 is an abundant number, since it is smaller than the sum of its proper divisors (2302809408).

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

1229115456 is a wasteful number, since it uses less digits than its factorization.

1229115456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400 (or 5387 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1229115456 is about 35058.7429323985. The cubic root of 1229115456 is about 1071.1843688174.

The spelling of 1229115456 in words is "one billion, two hundred twenty-nine million, one hundred fifteen thousand, four hundred fifty-six".