30255822 has 16 divisors (see below), whose sum is σ = 67235280. Its totient is φ = 10085256.

The previous prime is 30255821. The next prime is 30255871. The reversal of 30255822 is 22855203.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255821) 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, 280093 + ... + 280200.

It is an arithmetic number, because the mean of its divisors is an integer number (4202205).

Almost surely, 2^30255822 is an apocalyptic number.

30255822 is an abundant number, since it is smaller than the sum of its proper divisors (36979458).

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

30255822 is a wasteful number, since it uses less digits than its factorization.

30255822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560304 (or 560298 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 30255822 is about 5500.5292472634. The cubic root of 30255822 is about 311.6039723793.

The spelling of 30255822 in words is "thirty million, two hundred fifty-five thousand, eight hundred twenty-two".