30622172 has 24 divisors (see below), whose sum is σ = 63221760. Its totient is φ = 12700080.

The previous prime is 30622157. The next prime is 30622201. The reversal of 30622172 is 27122603.

It is a congruent number.

It is an unprimeable number.

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, 16772 + ... + 18507.

It is an arithmetic number, because the mean of its divisors is an integer number (2634240).

Almost surely, 2^30622172 is an apocalyptic number.

It is an amenable number.

30622172 is an abundant number, since it is smaller than the sum of its proper divisors (32599588).

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

30622172 is a wasteful number, since it uses less digits than its factorization.

30622172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35321 (or 35319 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 30622172 is about 5533.7303873608. The cubic root of 30622172 is about 312.8566066666.

Adding to 30622172 its reverse (27122603), we get a palindrome (57744775).

The spelling of 30622172 in words is "thirty million, six hundred twenty-two thousand, one hundred seventy-two".