30722242 has 8 divisors (see below), whose sum is σ = 46200636. Its totient is φ = 15322032.

The previous prime is 30722239. The next prime is 30722249. The reversal of 30722242 is 24222703.

It can be written as a sum of positive squares in 2 ways, for example, as 28291761 + 2430481 = 5319^2 + 1559^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30722249) 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 3 ways as a sum of consecutive naturals, for example, 18553 + ... + 20140.

Almost surely, 2^30722242 is an apocalyptic number.

30722242 is a deficient number, since it is larger than the sum of its proper divisors (15478394).

30722242 is a wasteful number, since it uses less digits than its factorization.

30722242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39092.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 30722242 is about 5542.7648335465. The cubic root of 30722242 is about 313.1970301474.

Adding to 30722242 its reverse (24222703), we get a palindrome (54944945).

The spelling of 30722242 in words is "thirty million, seven hundred twenty-two thousand, two hundred forty-two".