30345380 has 48 divisors (see below), whose sum is σ = 69242880. Its totient is φ = 11104128.

The previous prime is 30345379. The next prime is 30345389. The reversal of 30345380 is 8354303.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30345389) 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 15 ways as a sum of consecutive naturals, for example, 32561 + ... + 33479.

It is an arithmetic number, because the mean of its divisors is an integer number (1442560).

Almost surely, 2^30345380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30345380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34621440).

30345380 is an abundant number, since it is smaller than the sum of its proper divisors (38897500).

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

30345380 is a wasteful number, since it uses less digits than its factorization.

30345380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1066 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 30345380 is about 5508.6640848758. The cubic root of 30345380 is about 311.9111214074.

Adding to 30345380 its reverse (8354303), we get a palindrome (38699683).

The spelling of 30345380 in words is "thirty million, three hundred forty-five thousand, three hundred eighty".