30194856 has 80 divisors (see below), whose sum is σ = 89581140. Its totient is φ = 9469440.

The previous prime is 30194851. The next prime is 30194861. The reversal of 30194856 is 65849103.

It is an interprime number because it is at equal distance from previous prime (30194851) and next prime (30194861).

It can be written as a sum of positive squares in 2 ways, for example, as 30140100 + 54756 = 5490^2 + 234^2 .

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 30194856.

It is not an unprimeable number, because it can be changed into a prime (30194851) 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 19 ways as a sum of consecutive naturals, for example, 9646 + ... + 12386.

Almost surely, 2^30194856 is an apocalyptic number.

30194856 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 30194856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44790570).

30194856 is an abundant number, since it is smaller than the sum of its proper divisors (59386284).

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

30194856 is a wasteful number, since it uses less digits than its factorization.

30194856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 30194856 is about 5494.9846223625. The cubic root of 30194856 is about 311.3945358614.

It can be divided in two parts, 3019 and 4856, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 30194856 in words is "thirty million, one hundred ninety-four thousand, eight hundred fifty-six".