30023140 has 24 divisors (see below), whose sum is σ = 72055872. Its totient is φ = 10293600.

The previous prime is 30023137. The next prime is 30023167. The reversal of 30023140 is 4132003.

It is a self number, because there is not a number n which added to its sum of digits gives 30023140.

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 7 ways as a sum of consecutive naturals, for example, 107086 + ... + 107365.

It is an arithmetic number, because the mean of its divisors is an integer number (3002328).

Almost surely, 2^30023140 is an apocalyptic number.

It is an amenable number.

30023140 is an abundant number, since it is smaller than the sum of its proper divisors (42032732).

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

30023140 is a wasteful number, since it uses less digits than its factorization.

30023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214467 (or 214465 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30023140 is about 5479.3375512009. The cubic root of 30023140 is about 310.8031204637.

Adding to 30023140 its reverse (4132003), we get a palindrome (34155143).

The spelling of 30023140 in words is "thirty million, twenty-three thousand, one hundred forty".