80289144 has 128 divisors (see below), whose sum is σ = 243835200. Its totient is φ = 24634368.

The previous prime is 80289133. The next prime is 80289161. The reversal of 80289144 is 44198208.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80289099 and 80289108.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227272 + ... + 227624.

Almost surely, 2^80289144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80289144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121917600).

80289144 is an abundant number, since it is smaller than the sum of its proper divisors (163546056).

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

80289144 is a wasteful number, since it uses less digits than its factorization.

80289144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 80289144 is about 8960.4209722535. The cubic root of 80289144 is about 431.4054320628.

The spelling of 80289144 in words is "eighty million, two hundred eighty-nine thousand, one hundred forty-four".