30370340 has 192 divisors, whose sum is σ = 90091008. Its totient is φ = 8294400.

The previous prime is 30370339. The next prime is 30370349. The reversal of 30370340 is 4307303.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (30370349) 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 63 ways as a sum of consecutive naturals, for example, 740720 + ... + 740760.

It is an arithmetic number, because the mean of its divisors is an integer number (469224).

Almost surely, 2^30370340 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 30370340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45045504).

30370340 is an abundant number, since it is smaller than the sum of its proper divisors (59720668).

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

30370340 is a wasteful number, since it uses less digits than its factorization.

30370340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 30370340 is about 5510.9291412610. The cubic root of 30370340 is about 311.9966167724.

Adding to 30370340 its reverse (4307303), we get a palindrome (34677643).

The spelling of 30370340 in words is "thirty million, three hundred seventy thousand, three hundred forty".