30040215 has 8 divisors (see below), whose sum is σ = 48064368. Its totient is φ = 16021440.

The previous prime is 30040211. The next prime is 30040217. The reversal of 30040215 is 51204003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30040215 - 2² = 30040211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2002681 = 30040215 / (3 + 0 + 0 + 4 + 0 + 2 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 30040194 and 30040203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001326 + ... + 1001355.

It is an arithmetic number, because the mean of its divisors is an integer number (6008046).

Almost surely, 2^30040215 is an apocalyptic number.

30040215 is a deficient number, since it is larger than the sum of its proper divisors (18024153).

30040215 is a wasteful number, since it uses less digits than its factorization.

30040215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002689.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30040215 is about 5480.8954560364. The cubic root of 30040215 is about 310.8620301083.

Adding to 30040215 its reverse (51204003), we get a palindrome (81244218).

The spelling of 30040215 in words is "thirty million, forty thousand, two hundred fifteen".