144216890 has 16 divisors (see below), whose sum is σ = 262162440. Its totient is φ = 57115200.

The previous prime is 144216889. The next prime is 144216893. The reversal of 144216890 is 98612441.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 144168049 + 48841 = 12007^2 + 221^2 .

It is a super-2 number, since 2×144216890² = 41597022722544200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144216890.

It is not an unprimeable number, because it can be changed into a prime (144216893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70385 + ... + 72404.

Almost surely, 2^144216890 is an apocalyptic number.

144216890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144216890 is a deficient number, since it is larger than the sum of its proper divisors (117945550).

144216890 is a wasteful number, since it uses less digits than its factorization.

144216890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142897.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 144216890 is about 12009.0336830238. The cubic root of 144216890 is about 524.4113008150.

The spelling of 144216890 in words is "one hundred forty-four million, two hundred sixteen thousand, eight hundred ninety".