144215400 has 96 divisors (see below), whose sum is σ = 510949440. Its totient is φ = 32962560.

The previous prime is 144215387. The next prime is 144215417. The reversal of 144215400 is 4512441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12969 + ... + 21368.

It is an arithmetic number, because the mean of its divisors is an integer number (5322390).

Almost surely, 2^144215400 is an apocalyptic number.

144215400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144215400 is an abundant number, since it is smaller than the sum of its proper divisors (366734040).

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

144215400 is a wasteful number, since it uses less digits than its factorization.

144215400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34363 (or 34354 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 144215400 is about 12008.9716462318. The cubic root of 144215400 is about 524.4094947956.

Adding to 144215400 its reverse (4512441), we get a palindrome (148727841).

The spelling of 144215400 in words is "one hundred forty-four million, two hundred fifteen thousand, four hundred".