144568890 has 24 divisors (see below), whose sum is σ = 375879348. Its totient is φ = 38551680.

The previous prime is 144568883. The next prime is 144568909. The reversal of 144568890 is 98865441.

144568890 is a `hidden beast` number, since 1 + 4 + 4 + 568 + 89 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 141776649 + 2792241 = 11907^2 + 1671^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 803071 + ... + 803250.

Almost surely, 2^144568890 is an apocalyptic number.

144568890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144568890 is an abundant number, since it is smaller than the sum of its proper divisors (231310458).

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

144568890 is a wasteful number, since it uses less digits than its factorization.

144568890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606334 (or 1606331 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 144568890 is about 12023.6803849736. The cubic root of 144568890 is about 524.8376096394.

The spelling of 144568890 in words is "one hundred forty-four million, five hundred sixty-eight thousand, eight hundred ninety".