30990096 has 120 divisors (see below), whose sum is σ = 92415960. Its totient is φ = 9676800.

The previous prime is 30990077. The next prime is 30990097. The reversal of 30990096 is 69009903.

It can be written as a sum of positive squares in 4 ways, for example, as 1440000 + 29550096 = 1200^2 + 5436^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30990096.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990097) 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 23 ways as a sum of consecutive naturals, for example, 171126 + ... + 171306.

It is an arithmetic number, because the mean of its divisors is an integer number (770133).

Almost surely, 2^30990096 is an apocalyptic number.

30990096 is a gapful number since it is divisible by the number (36) 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 30990096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46207980).

30990096 is an abundant number, since it is smaller than the sum of its proper divisors (61425864).

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

30990096 is a wasteful number, since it uses less digits than its factorization.

30990096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The square root of 30990096 is about 5566.8748863254. The cubic root of 30990096 is about 314.1046076608.

Adding to 30990096 its reverse (69009903), we get a palindrome (99999999).

The spelling of 30990096 in words is "thirty million, nine hundred ninety thousand, ninety-six".