1190890 has 8 divisors (see below), whose sum is σ = 2143620. Its totient is φ = 476352.

The previous prime is 1190873. The next prime is 1190897. The reversal of 1190890 is 980911.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 103041 = 1043^2 + 321^2 .

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 (1190897) 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, 59535 + ... + 59554.

2^1190890 is an apocalyptic number.

1190890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1190890 is a deficient number, since it is larger than the sum of its proper divisors (952730).

1190890 is a wasteful number, since it uses less digits than its factorization.

1190890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119096.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1190890 is about 1091.2790660505. The cubic root of 1190890 is about 105.9962618831.

It can be divided in two parts, 1190 and 890, that added together give a triangular number (2080 = T₆₄).

The spelling of 1190890 in words is "one million, one hundred ninety thousand, eight hundred ninety".