30140420 has 48 divisors (see below), whose sum is σ = 65596608. Its totient is φ = 11625600.

The previous prime is 30140413. The next prime is 30140431. The reversal of 30140420 is 2404103.

It is a junction number, because it is equal to n+sod(n) for n = 30140395 and 30140404.

It is an unprimeable number.

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, 86687 + ... + 87033.

It is an arithmetic number, because the mean of its divisors is an integer number (1366596).

Almost surely, 2^30140420 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 30140420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32798304).

30140420 is an abundant number, since it is smaller than the sum of its proper divisors (35456188).

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

30140420 is a wasteful number, since it uses less digits than its factorization.

30140420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 30140420 is about 5490.0291438206. The cubic root of 30140420 is about 311.2072934852.

Adding to 30140420 its reverse (2404103), we get a palindrome (32544523).

The spelling of 30140420 in words is "thirty million, one hundred forty thousand, four hundred twenty".