144208836 has 72 divisors (see below), whose sum is σ = 382505760. Its totient is φ = 47500992.

The previous prime is 144208829. The next prime is 144208843. The reversal of 144208836 is 638802441.

It is an interprime number because it is at equal distance from previous prime (144208829) and next prime (144208843).

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

It is a self number, because there is not a number n which added to its sum of digits gives 144208836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85675 + ... + 87341.

It is an arithmetic number, because the mean of its divisors is an integer number (5312580).

Almost surely, 2^144208836 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 144208836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191252880).

144208836 is an abundant number, since it is smaller than the sum of its proper divisors (238296924).

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

144208836 is a wasteful number, since it uses less digits than its factorization.

144208836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775 (or 1761 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 144208836 is about 12008.6983474480. The cubic root of 144208836 is about 524.4015384651.

The spelling of 144208836 in words is "one hundred forty-four million, two hundred eight thousand, eight hundred thirty-six".