1228627960 has 192 divisors, whose sum is σ = 3377099520. Its totient is φ = 400619520.

The previous prime is 1228627943. The next prime is 1228627963. The reversal of 1228627960 is 697268221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228627963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4435342 + ... + 4435618.

It is an arithmetic number, because the mean of its divisors is an integer number (17589060).

Almost surely, 2^1228627960 is an apocalyptic number.

1228627960 is a gapful number since it is divisible by the number (10) 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 1228627960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1688549760).

1228627960 is an abundant number, since it is smaller than the sum of its proper divisors (2148471560).

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

1228627960 is a wasteful number, since it uses less digits than its factorization.

1228627960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1228627960 is about 35051.7896832672. The cubic root of 1228627960 is about 1071.0427311471.

The spelling of 1228627960 in words is "one billion, two hundred twenty-eight million, six hundred twenty-seven thousand, nine hundred sixty".