30220138 has 16 divisors (see below), whose sum is σ = 48976200. Its totient is φ = 13902336.

The previous prime is 30220121. The next prime is 30220139. The reversal of 30220138 is 83102203.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7112889 + 23107249 = 2667^2 + 4807^2 .

It is not an unprimeable number, because it can be changed into a prime (30220139) 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, 7038 + ... + 10486.

Almost surely, 2^30220138 is an apocalyptic number.

30220138 is a deficient number, since it is larger than the sum of its proper divisors (18756062).

30220138 is a wasteful number, since it uses less digits than its factorization.

30220138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30220138 is about 5497.2846024196. The cubic root of 30220138 is about 311.4814213056.

The spelling of 30220138 in words is "thirty million, two hundred twenty thousand, one hundred thirty-eight".