1380490 has 16 divisors (see below), whose sum is σ = 2506752. Its totient is φ = 547344.

The previous prime is 1380469. The next prime is 1380499. The reversal of 1380490 is 940831.

It is not an unprimeable number, because it can be changed into a prime (1380499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (156672).

2^1380490 is an apocalyptic number.

1380490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1380490 is a deficient number, since it is larger than the sum of its proper divisors (1126262).

1380490 is a wasteful number, since it uses less digits than its factorization.

1380490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1380490 is about 1174.9425517871. The cubic root of 1380490 is about 111.3468037613.

The spelling of 1380490 in words is "one million, three hundred eighty thousand, four hundred ninety".