30044940 has 48 divisors (see below), whose sum is σ = 85515360. Its totient is φ = 7879680.

The previous prime is 30044939. The next prime is 30044953. The reversal of 30044940 is 4944003.

It is a self number, because there is not a number n which added to its sum of digits gives 30044940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445 + ... + 7764.

It is an arithmetic number, because the mean of its divisors is an integer number (1781570).

Almost surely, 2^30044940 is an apocalyptic number.

30044940 is a gapful number since it is divisible by the number (30) 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 30044940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42757680).

30044940 is an abundant number, since it is smaller than the sum of its proper divisors (55470420).

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

30044940 is a wasteful number, since it uses less digits than its factorization.

30044940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8282 (or 8280 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30044940 is about 5481.3264817925. The cubic root of 30044940 is about 310.8783276625.

Adding to 30044940 its reverse (4944003), we get a palindrome (34988943).

The spelling of 30044940 in words is "thirty million, forty-four thousand, nine hundred forty".