1226987328 has 112 divisors (see below), whose sum is σ = 3721973760. Its totient is φ = 349453824.

The previous prime is 1226987287. The next prime is 1226987329. The reversal of 1226987328 is 8237896221.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226987329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 481225 + ... + 483767.

Almost surely, 2^1226987328 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 1226987328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860986880).

1226987328 is an abundant number, since it is smaller than the sum of its proper divisors (2494986432).

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

1226987328 is a wasteful number, since it uses less digits than its factorization.

1226987328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924 (or 2914 counting only the distinct ones).

The product of its digits is 580608, while the sum is 48.

The square root of 1226987328 is about 35028.3788948333. The cubic root of 1226987328 is about 1070.5657845689.

The spelling of 1226987328 in words is "one billion, two hundred twenty-six million, nine hundred eighty-seven thousand, three hundred twenty-eight".