30001005 has 24 divisors (see below), whose sum is σ = 55062072. Its totient is φ = 15058944.

The previous prime is 30001003. The next prime is 30001009. The reversal of 30001005 is 50010003.

It can be written as a sum of positive squares in 4 ways, for example, as 2090916 + 27910089 = 1446^2 + 5283^2 .

It is not a de Polignac number, because 30001005 - 2¹ = 30001003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18844 + ... + 20373.

It is an arithmetic number, because the mean of its divisors is an integer number (2294253).

Almost surely, 2^30001005 is an apocalyptic number.

It is an amenable number.

30001005 is a deficient number, since it is larger than the sum of its proper divisors (25061067).

30001005 is a wasteful number, since it uses less digits than its factorization.

30001005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39245 (or 39242 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

The square root of 30001005 is about 5477.3173178117. The cubic root of 30001005 is about 310.7267202996.

Adding to 30001005 its reverse (50010003), we get a palindrome (80011008).

It can be divided in two parts, 3000 and 1005, that added together give a triangular number (4005 = T₈₉).

The spelling of 30001005 in words is "thirty million, one thousand, five".