144709890 has 128 divisors (see below), whose sum is σ = 401587200. Its totient is φ = 33073920.

The previous prime is 144709861. The next prime is 144709927. The reversal of 144709890 is 98907441.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 437025 + ... + 437355.

It is an arithmetic number, because the mean of its divisors is an integer number (3137400).

Almost surely, 2^144709890 is an apocalyptic number.

144709890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 144709890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200793600).

144709890 is an abundant number, since it is smaller than the sum of its proper divisors (256877310).

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

144709890 is a wasteful number, since it uses less digits than its factorization.

144709890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 144709890 is about 12029.5423853113. The cubic root of 144709890 is about 525.0081812784.

The spelling of 144709890 in words is "one hundred forty-four million, seven hundred nine thousand, eight hundred ninety".