1379728 has 40 divisors (see below), whose sum is σ = 3110912. Its totient is φ = 580608.

The previous prime is 1379699. The next prime is 1379753. The reversal of 1379728 is 8279731.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10801 + ... + 10927.

2^1379728 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 1379728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1555456).

1379728 is an abundant number, since it is smaller than the sum of its proper divisors (1731184).

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

1379728 is a wasteful number, since it uses less digits than its factorization.

1379728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 233 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 1379728 is about 1174.6182358537. The cubic root of 1379728 is about 111.3263129983.

The spelling of 1379728 in words is "one million, three hundred seventy-nine thousand, seven hundred twenty-eight".