30227440 has 20 divisors (see below), whose sum is σ = 70278984. Its totient is φ = 12090944.

The previous prime is 30227413. The next prime is 30227443. The reversal of 30227440 is 4472203.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30227443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188842 + ... + 189001.

Almost surely, 2^30227440 is an apocalyptic number.

It is an amenable number.

30227440 is an abundant number, since it is smaller than the sum of its proper divisors (40051544).

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

30227440 is a wasteful number, since it uses less digits than its factorization.

30227440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377856 (or 377850 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 30227440 is about 5497.9487083821. The cubic root of 30227440 is about 311.5065067213.

Adding to 30227440 its reverse (4472203), we get a palindrome (34699643).

The spelling of 30227440 in words is "thirty million, two hundred twenty-seven thousand, four hundred forty".