1144990 has 32 divisors (see below), whose sum is σ = 2571264. Its totient is φ = 356640.

The previous prime is 1144981. The next prime is 1144993. The reversal of 1144990 is 994411.

It is a super-2 number, since 2×1144990² = 2622004200200, which contains 22 as substring.

1144990 is a Rhonda number in base 15.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144993) 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 15 ways as a sum of consecutive naturals, for example, 27 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (80352).

2^1144990 is an apocalyptic number.

1144990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1144990 is an abundant number, since it is smaller than the sum of its proper divisors (1426274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144990 is a wasteful number, since it uses less digits than its factorization.

1144990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1144990 is about 1070.0420552483. The cubic root of 1144990 is about 104.6165910993.

It can be divided in two parts, 1 and 144990, that added together give a triangular number (144991 = T₅₃₈).

The spelling of 1144990 in words is "one million, one hundred forty-four thousand, nine hundred ninety".