1144890 has 24 divisors (see below), whose sum is σ = 2976948. Its totient is φ = 305280.

The previous prime is 1144889. The next prime is 1144901. The reversal of 1144890 is 984411.

It can be written as a sum of positive squares in 2 ways, for example, as 1121481 + 23409 = 1059^2 + 153^2 .

It is a super-2 number, since 2×1144890² = 2621546224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6271 + ... + 6450.

2^1144890 is an apocalyptic number.

1144890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1144890 is an abundant number, since it is smaller than the sum of its proper divisors (1832058).

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

1144890 is a wasteful number, since it uses less digits than its factorization.

1144890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734 (or 12731 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1144890 is about 1069.9953270926. The cubic root of 1144890 is about 104.6135453773.

The spelling of 1144890 in words is "one million, one hundred forty-four thousand, eight hundred ninety".