30147830 has 16 divisors (see below), whose sum is σ = 54334800. Its totient is φ = 12043872.

The previous prime is 30147829. The next prime is 30147839. The reversal of 30147830 is 3874103.

It is a super-3 number, since 3×30147830³ (a number of 23 digits) contains 333 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30147830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30147839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9821 + ... + 12519.

It is an arithmetic number, because the mean of its divisors is an integer number (3395925).

Almost surely, 2^30147830 is an apocalyptic number.

30147830 is a deficient number, since it is larger than the sum of its proper divisors (24186970).

30147830 is a wasteful number, since it uses less digits than its factorization.

30147830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 30147830 is about 5490.7039621528. The cubic root of 30147830 is about 311.2327947565.

The spelling of 30147830 in words is "thirty million, one hundred forty-seven thousand, eight hundred thirty".