30233940 has 96 divisors (see below), whose sum is σ = 97251840. Its totient is φ = 6940800.

The previous prime is 30233893. The next prime is 30233947. The reversal of 30233940 is 4933203.

It is a super-2 number, since 2×30233940² = 1828182255847200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30233940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30233947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11335 + ... + 13745.

It is an arithmetic number, because the mean of its divisors is an integer number (1013040).

Almost surely, 2^30233940 is an apocalyptic number.

30233940 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 30233940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48625920).

30233940 is an abundant number, since it is smaller than the sum of its proper divisors (67017900).

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

30233940 is a wasteful number, since it uses less digits than its factorization.

30233940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2451 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 30233940 is about 5498.5398061667. The cubic root of 30233940 is about 311.5288335341.

The spelling of 30233940 in words is "thirty million, two hundred thirty-three thousand, nine hundred forty".