30440255 has 8 divisors (see below), whose sum is σ = 37305792. Its totient is φ = 23833888.

The previous prime is 30440239. The next prime is 30440257. The reversal of 30440255 is 55204403.

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

It is not a de Polignac number, because 30440255 - 2⁴ = 30440239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30440255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440257) 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, 64532 + ... + 65001.

It is an arithmetic number, because the mean of its divisors is an integer number (4663224).

Almost surely, 2^30440255 is an apocalyptic number.

30440255 is a deficient number, since it is larger than the sum of its proper divisors (6865537).

30440255 is a wasteful number, since it uses less digits than its factorization.

30440255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129585.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 30440255 is about 5517.2687989620. The cubic root of 30440255 is about 312.2358471774.

Adding to 30440255 its reverse (55204403), we get a palindrome (85644658).

The spelling of 30440255 in words is "thirty million, four hundred forty thousand, two hundred fifty-five".