30278229 has 8 divisors (see below), whose sum is σ = 42495840. Its totient is φ = 19123056.

The previous prime is 30278221. The next prime is 30278243. The reversal of 30278229 is 92287203.

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

It is not a de Polignac number, because 30278229 - 2³ = 30278221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30278229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30278221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265542 + ... + 265655.

It is an arithmetic number, because the mean of its divisors is an integer number (5311980).

Almost surely, 2^30278229 is an apocalyptic number.

It is an amenable number.

30278229 is a deficient number, since it is larger than the sum of its proper divisors (12217611).

30278229 is a wasteful number, since it uses less digits than its factorization.

30278229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531219.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 30278229 is about 5502.5656743014. The cubic root of 30278229 is about 311.6808764464.

The spelling of 30278229 in words is "thirty million, two hundred seventy-eight thousand, two hundred twenty-nine".