1228071160 has 64 divisors (see below), whose sum is σ = 2936567520. Its totient is φ = 460615680.

The previous prime is 1228071157. The next prime is 1228071161. The reversal of 1228071160 is 611708221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228071161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187867 + ... + 194293.

Almost surely, 2^1228071160 is an apocalyptic number.

1228071160 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 1228071160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468283760).

1228071160 is an abundant number, since it is smaller than the sum of its proper divisors (1708496360).

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

1228071160 is a wasteful number, since it uses less digits than its factorization.

1228071160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6732 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1228071160 is about 35043.8462500908. The cubic root of 1228071160 is about 1070.8809119683.

Adding to 1228071160 its reverse (611708221), we get a palindrome (1839779381).

The spelling of 1228071160 in words is "one billion, two hundred twenty-eight million, seventy-one thousand, one hundred sixty".