144304402 has 24 divisors (see below), whose sum is σ = 239388912. Its totient is φ = 64701000.

The previous prime is 144304393. The next prime is 144304417. The reversal of 144304402 is 204403441.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136777 + ... + 137827.

It is an arithmetic number, because the mean of its divisors is an integer number (9974538).

Almost surely, 2^144304402 is an apocalyptic number.

144304402 is a deficient number, since it is larger than the sum of its proper divisors (95084510).

144304402 is a wasteful number, since it uses less digits than its factorization.

144304402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 144304402 is about 12012.6767208645. The cubic root of 144304402 is about 524.5173517366.

Adding to 144304402 its reverse (204403441), we get a palindrome (348707843).

The spelling of 144304402 in words is "one hundred forty-four million, three hundred four thousand, four hundred two".