30055500 has 72 divisors (see below), whose sum is σ = 94829280. Its totient is φ = 8013600.

The previous prime is 30055499. The next prime is 30055517. The reversal of 30055500 is 555003.

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

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, 1161 + ... + 7839.

Almost surely, 2^30055500 is an apocalyptic number.

30055500 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 30055500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47414640).

30055500 is an abundant number, since it is smaller than the sum of its proper divisors (64773780).

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

30055500 is a wasteful number, since it uses less digits than its factorization.

30055500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704 (or 6689 counting only the distinct ones).

The product of its (nonzero) digits is 375, while the sum is 18.

The square root of 30055500 is about 5482.2896676480. The cubic root of 30055500 is about 310.9147452267.

The spelling of 30055500 in words is "thirty million, fifty-five thousand, five hundred".