30084780 has 96 divisors (see below), whose sum is σ = 93219840. Its totient is φ = 7188480.

The previous prime is 30084779. The next prime is 30084793. The reversal of 30084780 is 8748003.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 31 ways as a sum of consecutive naturals, for example, 51852 + ... + 52428.

It is an arithmetic number, because the mean of its divisors is an integer number (971040).

Almost surely, 2^30084780 is an apocalyptic number.

30084780 is a gapful number since it is divisible by the number (30) 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 30084780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46609920).

30084780 is an abundant number, since it is smaller than the sum of its proper divisors (63135060).

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

30084780 is a wasteful number, since it uses less digits than its factorization.

30084780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30084780 is about 5484.9594346722. The cubic root of 30084780 is about 311.0156766049.

The spelling of 30084780 in words is "thirty million, eighty-four thousand, seven hundred eighty".