30444156 has 72 divisors (see below), whose sum is σ = 82817280. Its totient is φ = 9399456.

The previous prime is 30444143. The next prime is 30444163. The reversal of 30444156 is 65144403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31675 + ... + 32621.

It is an arithmetic number, because the mean of its divisors is an integer number (1150240).

Almost surely, 2^30444156 is an apocalyptic number.

30444156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30444156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41408640).

30444156 is an abundant number, since it is smaller than the sum of its proper divisors (52373124).

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

30444156 is a wasteful number, since it uses less digits than its factorization.

30444156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 30444156 is about 5517.6223140045. The cubic root of 30444156 is about 312.2491845604.

Adding to 30444156 its reverse (65144403), we get a palindrome (95588559).

The spelling of 30444156 in words is "thirty million, four hundred forty-four thousand, one hundred fifty-six".