1379428 has 6 divisors (see below), whose sum is σ = 2414006. Its totient is φ = 689712.

The previous prime is 1379423. The next prime is 1379447. The reversal of 1379428 is 8249731.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 142884 = 1112^2 + 378^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1379393 and 1379402.

It is not an unprimeable number, because it can be changed into a prime (1379423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172425 + ... + 172432.

2^1379428 is an apocalyptic number.

It is an amenable number.

1379428 is a deficient number, since it is larger than the sum of its proper divisors (1034578).

1379428 is a wasteful number, since it uses less digits than its factorization.

1379428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344861 (or 344859 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 1379428 is about 1174.4905278460. The cubic root of 1379428 is about 111.3182436990.

The spelling of 1379428 in words is "one million, three hundred seventy-nine thousand, four hundred twenty-eight".