30143144 has 8 divisors (see below), whose sum is σ = 56518410. Its totient is φ = 15071568.

The previous prime is 30143137. The next prime is 30143149. The reversal of 30143144 is 44134103.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26646244 + 3496900 = 5162^2 + 1870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (30143149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1883939 + ... + 1883954.

Almost surely, 2^30143144 is an apocalyptic number.

It is an amenable number.

30143144 is a deficient number, since it is larger than the sum of its proper divisors (26375266).

30143144 is a wasteful number, since it uses less digits than its factorization.

30143144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767899 (or 3767895 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 30143144 is about 5490.2772243303. The cubic root of 30143144 is about 311.2166685274.

Adding to 30143144 its reverse (44134103), we get a palindrome (74277247).

The spelling of 30143144 in words is "thirty million, one hundred forty-three thousand, one hundred forty-four".