30222288 has 40 divisors (see below), whose sum is σ = 86750400. Its totient is φ = 10073952.

The previous prime is 30222287. The next prime is 30222301. The reversal of 30222288 is 88222203.

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 (30222287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34548 + ... + 35411.

It is an arithmetic number, because the mean of its divisors is an integer number (2168760).

Almost surely, 2^30222288 is an apocalyptic number.

It is an amenable number.

30222288 is an abundant number, since it is smaller than the sum of its proper divisors (56528112).

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

30222288 is a wasteful number, since it uses less digits than its factorization.

30222288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69976 (or 69964 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 30222288 is about 5497.4801500324. The cubic root of 30222288 is about 311.4888078721.

The spelling of 30222288 in words is "thirty million, two hundred twenty-two thousand, two hundred eighty-eight".