1370021328 has 120 divisors (see below), whose sum is σ = 4142130720. Its totient is φ = 420215040.

The previous prime is 1370021309. The next prime is 1370021329. The reversal of 1370021328 is 8231200731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370021329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708523 + ... + 710453.

It is an arithmetic number, because the mean of its divisors is an integer number (34517756).

Almost surely, 2^1370021328 is an apocalyptic number.

1370021328 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 1370021328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2071065360).

1370021328 is an abundant number, since it is smaller than the sum of its proper divisors (2772109392).

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

1370021328 is a wasteful number, since it uses less digits than its factorization.

1370021328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337 (or 2328 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1370021328 is about 37013.7991565308. The cubic root of 1370021328 is about 1110.6463048875.

The spelling of 1370021328 in words is "one billion, three hundred seventy million, twenty-one thousand, three hundred twenty-eight".