30100680 has 128 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 7842816.

The previous prime is 30100667. The next prime is 30100687. The reversal of 30100680 is 8600103.

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

It is not an unprimeable number, because it can be changed into a prime (30100687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50464 + ... + 51056.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^30100680 is an apocalyptic number.

30100680 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 30100680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51321600).

30100680 is an abundant number, since it is smaller than the sum of its proper divisors (72542520).

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

30100680 is a wasteful number, since it uses less digits than its factorization.

30100680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 650 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 30100680 is about 5486.4086614105. The cubic root of 30100680 is about 311.0704582180.

Adding to 30100680 its reverse (8600103), we get a palindrome (38700783).

The spelling of 30100680 in words is "thirty million, one hundred thousand, six hundred eighty".