30305400 has 96 divisors (see below), whose sum is σ = 95819760. Its totient is φ = 7920640.

The previous prime is 30305369. The next prime is 30305413. The reversal of 30305400 is 450303.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30305400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31324 + ... + 32276.

Almost surely, 2^30305400 is an apocalyptic number.

30305400 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 30305400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47909880).

30305400 is an abundant number, since it is smaller than the sum of its proper divisors (65514360).

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

30305400 is a wasteful number, since it uses less digits than its factorization.

30305400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025 (or 1016 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 30305400 is about 5505.0340598401. The cubic root of 30305400 is about 311.7740803692.

Adding to 30305400 its reverse (450303), we get a palindrome (30755703).

The spelling of 30305400 in words is "thirty million, three hundred five thousand, four hundred".