144137808 has 60 divisors (see below), whose sum is σ = 405513108. Its totient is φ = 47792640.

The previous prime is 144137789. The next prime is 144137809. The reversal of 144137808 is 808731441.

It can be written as a sum of positive squares in 2 ways, for example, as 88962624 + 55175184 = 9432^2 + 7428^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144137809) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 25828 + ... + 30908.

Almost surely, 2^144137808 is an apocalyptic number.

144137808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144137808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202756554).

144137808 is an abundant number, since it is smaller than the sum of its proper divisors (261375300).

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

144137808 is a wasteful number, since it uses less digits than its factorization.

144137808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292 (or 5283 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 144137808 is about 12005.7406268835. The cubic root of 144137808 is about 524.3154288332.

The spelling of 144137808 in words is "one hundred forty-four million, one hundred thirty-seven thousand, eight hundred eight".