30344240 has 40 divisors (see below), whose sum is σ = 72199248. Its totient is φ = 11854080.

The previous prime is 30344239. The next prime is 30344261. The reversal of 30344240 is 4244303.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 7850.

Almost surely, 2^30344240 is an apocalyptic number.

It is an amenable number.

30344240 is an abundant number, since it is smaller than the sum of its proper divisors (41855008).

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

30344240 is a wasteful number, since it uses less digits than its factorization.

30344240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8877 (or 8871 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 30344240 is about 5508.5606105407. The cubic root of 30344240 is about 311.9072154517.

Adding to 30344240 its reverse (4244303), we get a palindrome (34588543).

The spelling of 30344240 in words is "thirty million, three hundred forty-four thousand, two hundred forty".