1378222200 has 144 divisors (see below), whose sum is σ = 4640045280. Its totient is φ = 366612480.

The previous prime is 1378222199. The next prime is 1378222207. The reversal of 1378222200 is 22228731.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378222207) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1037937 + ... + 1039263.

Almost surely, 2^1378222200 is an apocalyptic number.

1378222200 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 1378222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320022640).

1378222200 is an abundant number, since it is smaller than the sum of its proper divisors (3261823080).

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

1378222200 is a wasteful number, since it uses less digits than its factorization.

1378222200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1378222200 is about 37124.4151469084. The cubic root of 1378222200 is about 1112.8579868840.

The spelling of 1378222200 in words is "one billion, three hundred seventy-eight million, two hundred twenty-two thousand, two hundred".