30001000 has 64 divisors (see below), whose sum is σ = 73944000. Its totient is φ = 11361600.

The previous prime is 30000989. The next prime is 30001003. The reversal of 30001000 is 10003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (4).

It is not an unprimeable number, because it can be changed into a prime (30001003) 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 15 ways as a sum of consecutive naturals, for example, 18211 + ... + 19789.

It is an arithmetic number, because the mean of its divisors is an integer number (1155375).

Almost surely, 2^30001000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30001000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36972000).

30001000 is an abundant number, since it is smaller than the sum of its proper divisors (43943000).

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

30001000 is a wasteful number, since it uses less digits than its factorization.

30001000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 4.

The square root of 30001000 is about 5477.3168613839. The cubic root of 30001000 is about 310.7267030376.

Adding to 30001000 its reverse (10003), we get a palindrome (30011003).

The spelling of 30001000 in words is "thirty million, one thousand".