1378670272 has 84 divisors (see below), whose sum is σ = 3235080144. Its totient is φ = 581091840.

The previous prime is 1378670263. The next prime is 1378670299. The reversal of 1378670272 is 2720768731.

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 11 ways as a sum of consecutive naturals, for example, 187693 + ... + 194899.

Almost surely, 2^1378670272 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 1378670272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1617540072).

1378670272 is an abundant number, since it is smaller than the sum of its proper divisors (1856409872).

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

1378670272 is an equidigital number, since it uses as much as digits as its factorization.

1378670272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294 (or 7277 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1378670272 is about 37130.4493913015. The cubic root of 1378670272 is about 1112.9785737473.

The spelling of 1378670272 in words is "one billion, three hundred seventy-eight million, six hundred seventy thousand, two hundred seventy-two".