1393828 has 6 divisors (see below), whose sum is σ = 2439206. Its totient is φ = 696912.

The previous prime is 1393817. The next prime is 1393831. The reversal of 1393828 is 8283931.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 605284 = 888^2 + 778^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1393793 and 1393802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174225 + ... + 174232.

2^1393828 is an apocalyptic number.

It is an amenable number.

1393828 is a deficient number, since it is larger than the sum of its proper divisors (1045378).

1393828 is a wasteful number, since it uses less digits than its factorization.

1393828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348461 (or 348459 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 1393828 is about 1180.6049296865. The cubic root of 1393828 is about 111.7042580302.

The spelling of 1393828 in words is "one million, three hundred ninety-three thousand, eight hundred twenty-eight".