30513340 has 96 divisors (see below), whose sum is σ = 77220864. Its totient is φ = 9980160.

The previous prime is 30513337. The next prime is 30513367. The reversal of 30513340 is 4331503.

It is a congruent number.

It is an unprimeable number.

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, 134307 + ... + 134533.

It is an arithmetic number, because the mean of its divisors is an integer number (804384).

Almost surely, 2^30513340 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 30513340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38610432).

30513340 is an abundant number, since it is smaller than the sum of its proper divisors (46707524).

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

30513340 is a wasteful number, since it uses less digits than its factorization.

30513340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 30513340 is about 5523.8881234145. Note that the first 3 decimals coincide. The cubic root of 30513340 is about 312.4855331970.

Adding to 30513340 its reverse (4331503), we get a palindrome (34844843).

The spelling of 30513340 in words is "thirty million, five hundred thirteen thousand, three hundred forty".