30122724 has 12 divisors (see below), whose sum is σ = 70286384. Its totient is φ = 10040904.

The previous prime is 30122717. The next prime is 30122737. The reversal of 30122724 is 42722103.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 30122724.

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 3 ways as a sum of consecutive naturals, for example, 1255102 + ... + 1255125.

Almost surely, 2^30122724 is an apocalyptic number.

It is an amenable number.

30122724 is an abundant number, since it is smaller than the sum of its proper divisors (40163660).

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

30122724 is a wasteful number, since it uses less digits than its factorization.

30122724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510234 (or 2510232 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 30122724 is about 5488.4172581902. The cubic root of 30122724 is about 311.1463763690.

Adding to 30122724 its reverse (42722103), we get a palindrome (72844827).

The spelling of 30122724 in words is "thirty million, one hundred twenty-two thousand, seven hundred twenty-four".