30000492 has 18 divisors (see below), whose sum is σ = 75834668. Its totient is φ = 10000152.

The previous prime is 30000473. The next prime is 30000493. The reversal of 30000492 is 29400003.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

30000492 is a modest number, since divided by 492 gives 300 as remainder.

It is not an unprimeable number, because it can be changed into a prime (30000493) 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 5 ways as a sum of consecutive naturals, for example, 416638 + ... + 416709.

Almost surely, 2^30000492 is an apocalyptic number.

It is an amenable number.

30000492 is an abundant number, since it is smaller than the sum of its proper divisors (45834176).

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

30000492 is a wasteful number, since it uses less digits than its factorization.

30000492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833357 (or 833352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 30000492 is about 5477.2704881172. The cubic root of 30000492 is about 310.7249492065.

Adding to 30000492 its reverse (29400003), we get a palindrome (59400495).

The spelling of 30000492 in words is "thirty million, four hundred ninety-two", and thus it is an aban number.