1380111228 has 72 divisors (see below), whose sum is σ = 3648398208. Its totient is φ = 439056288.

The previous prime is 1380111203. The next prime is 1380111233. The reversal of 1380111228 is 8221110831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431451 + ... + 434637.

Almost surely, 2^1380111228 is an apocalyptic number.

1380111228 is a gapful number since it is divisible by the number (18) 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 1380111228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824199104).

1380111228 is an abundant number, since it is smaller than the sum of its proper divisors (2268286980).

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

1380111228 is a wasteful number, since it uses less digits than its factorization.

1380111228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 27.

The square root of 1380111228 is about 37149.8482904036. The cubic root of 1380111228 is about 1113.3661923521.

The spelling of 1380111228 in words is "one billion, three hundred eighty million, one hundred eleven thousand, two hundred twenty-eight".