30144340 has 24 divisors (see below), whose sum is σ = 65487240. Its totient is φ = 11641728.

The previous prime is 30144319. The next prime is 30144341. The reversal of 30144340 is 4344103.

It can be written as a sum of positive squares in 4 ways, for example, as 1285956 + 28858384 = 1134^2 + 5372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30144341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25407 + ... + 26566.

It is an arithmetic number, because the mean of its divisors is an integer number (2728635).

Almost surely, 2^30144340 is an apocalyptic number.

It is an amenable number.

30144340 is an abundant number, since it is smaller than the sum of its proper divisors (35342900).

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

30144340 is a wasteful number, since it uses less digits than its factorization.

30144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52011 (or 52009 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 30144340 is about 5490.3861430686. The cubic root of 30144340 is about 311.2207845569.

Adding to 30144340 its reverse (4344103), we get a palindrome (34488443).

The spelling of 30144340 in words is "thirty million, one hundred forty-four thousand, three hundred forty".