30440155 has 8 divisors (see below), whose sum is σ = 38116512. Its totient is φ = 23293248.

The previous prime is 30440141. The next prime is 30440191. The reversal of 30440155 is 55104403.

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

It is a cyclic number.

It is not a de Polignac number, because 30440155 - 2¹⁵ = 30407387 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132234 + ... + 132463.

It is an arithmetic number, because the mean of its divisors is an integer number (4764564).

Almost surely, 2^30440155 is an apocalyptic number.

30440155 is a deficient number, since it is larger than the sum of its proper divisors (7676357).

30440155 is a wasteful number, since it uses less digits than its factorization.

30440155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264725.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 30440155 is about 5517.2597364996. The cubic root of 30440155 is about 312.2355052659.

Adding to 30440155 its reverse (55104403), we get a palindrome (85544558).

The spelling of 30440155 in words is "thirty million, four hundred forty thousand, one hundred fifty-five".