1378334272 has 112 divisors (see below), whose sum is σ = 3253800960. Its totient is φ = 566802432.

The previous prime is 1378334263. The next prime is 1378334291. The reversal of 1378334272 is 2724338731.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3598593 + ... + 3598975.

Almost surely, 2^1378334272 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 1378334272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626900480).

1378334272 is an abundant number, since it is smaller than the sum of its proper divisors (1875466688).

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

1378334272 is a wasteful number, since it uses less digits than its factorization.

1378334272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 698 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The square root of 1378334272 is about 37125.9245272087. The cubic root of 1378334272 is about 1112.8881505832. Note that the first 3 decimals are identical.

The spelling of 1378334272 in words is "one billion, three hundred seventy-eight million, three hundred thirty-four thousand, two hundred seventy-two".