144435400 has 96 divisors (see below), whose sum is σ = 371226240. Its totient is φ = 51983360.

The previous prime is 144435337. The next prime is 144435407. The reversal of 144435400 is 4534441.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144435407) 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 23 ways as a sum of consecutive naturals, for example, 77277 + ... + 79123.

It is an arithmetic number, because the mean of its divisors is an integer number (3866940).

Almost surely, 2^144435400 is an apocalyptic number.

144435400 is a gapful number since it is divisible by the number (10) 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 144435400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185613120).

144435400 is an abundant number, since it is smaller than the sum of its proper divisors (226790840).

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

144435400 is a wasteful number, since it uses less digits than its factorization.

144435400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 144435400 is about 12018.1279740232. The cubic root of 144435400 is about 524.6760208230.

Adding to 144435400 its reverse (4534441), we get a palindrome (148969841).

The spelling of 144435400 in words is "one hundred forty-four million, four hundred thirty-five thousand, four hundred".