30722230 has 64 divisors (see below), whose sum is σ = 73032192. Its totient is φ = 9008640.

The previous prime is 30722207. The next prime is 30722239. The reversal of 30722230 is 3222703.

It is a happy number.

30722230 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 30722198 and 30722207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30722239) 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 31 ways as a sum of consecutive naturals, for example, 11917 + ... + 14263.

It is an arithmetic number, because the mean of its divisors is an integer number (1141128).

Almost surely, 2^30722230 is an apocalyptic number.

30722230 is an abundant number, since it is smaller than the sum of its proper divisors (42309962).

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

30722230 is a wasteful number, since it uses less digits than its factorization.

30722230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 30722230 is about 5542.7637510542. The cubic root of 30722230 is about 313.1969893696.

Adding to 30722230 its reverse (3222703), we get a palindrome (33944933).

The spelling of 30722230 in words is "thirty million, seven hundred twenty-two thousand, two hundred thirty".