1382890 has 8 divisors (see below), whose sum is σ = 2489220. Its totient is φ = 553152.

The previous prime is 1382861. The next prime is 1382891. The reversal of 1382890 is 982831.

It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 34969 = 1161^2 + 187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1382891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69135 + ... + 69154.

2^1382890 is an apocalyptic number.

1382890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1382890 is a deficient number, since it is larger than the sum of its proper divisors (1106330).

1382890 is a wasteful number, since it uses less digits than its factorization.

1382890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138296.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1382890 is about 1175.9634348057. The cubic root of 1382890 is about 111.4112923647.

The spelling of 1382890 in words is "one million, three hundred eighty-two thousand, eight hundred ninety".