30004992 has 90 divisors (see below), whose sum is σ = 89531288. Its totient is φ = 9994752.

The previous prime is 30004991. The next prime is 30005011. The reversal of 30004992 is 29940003.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30004991) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 20013 + ... + 21459.

Almost surely, 2^30004992 is an apocalyptic number.

30004992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30004992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44765644).

30004992 is an abundant number, since it is smaller than the sum of its proper divisors (59526296).

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

30004992 is an equidigital number, since it uses as much as digits as its factorization.

30004992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30004992 is about 5477.6812612637. The cubic root of 30004992 is about 310.7404844225.

Adding to 30004992 its reverse (29940003), we get a palindrome (59944995).

The spelling of 30004992 in words is "thirty million, four thousand, nine hundred ninety-two".