30261330 has 128 divisors (see below), whose sum is σ = 92067840. Its totient is φ = 7001280.

The previous prime is 30261299. The next prime is 30261331. The reversal of 30261330 is 3316203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30261331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68089 + ... + 68531.

It is an arithmetic number, because the mean of its divisors is an integer number (719280).

Almost surely, 2^30261330 is an apocalyptic number.

30261330 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30261330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46033920).

30261330 is an abundant number, since it is smaller than the sum of its proper divisors (61806510).

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

30261330 is a wasteful number, since it uses less digits than its factorization.

30261330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 30261330 is about 5501.0299035726. The cubic root of 30261330 is about 311.6228801511.

Adding to 30261330 its reverse (3316203), we get a palindrome (33577533).

It can be divided in two parts, 3026 and 1330, that added together give a square (4356 = 66²).

The spelling of 30261330 in words is "thirty million, two hundred sixty-one thousand, three hundred thirty".