1382788 has 18 divisors (see below), whose sum is σ = 2660798. Its totient is φ = 628320.

The previous prime is 1382779. The next prime is 1382819. The reversal of 1382788 is 8872831.

It can be written as a sum of positive squares in only one way, i.e., 1258884 + 123904 = 1122^2 + 352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 945 + ... + 1912.

2^1382788 is an apocalyptic number.

It is an amenable number.

1382788 is a deficient number, since it is larger than the sum of its proper divisors (1278010).

1382788 is a wasteful number, since it uses less digits than its factorization.

1382788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883 (or 2870 counting only the distinct ones).

The product of its digits is 21504, while the sum is 37.

The square root of 1382788 is about 1175.9200653106. The cubic root of 1382788 is about 111.4085531178.

It can be divided in two parts, 138 and 2788, that added together give a triangular number (2926 = T₇₆).

The spelling of 1382788 in words is "one million, three hundred eighty-two thousand, seven hundred eighty-eight".