30122773 has 4 divisors (see below), whose sum is σ = 30936940. Its totient is φ = 29308608.

The previous prime is 30122767. The next prime is 30122777. The reversal of 30122773 is 37722103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23882769 + 6240004 = 4887^2 + 2498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30122773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30122777) 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 3 ways as a sum of consecutive naturals, for example, 407028 + ... + 407101.

It is an arithmetic number, because the mean of its divisors is an integer number (7734235).

Almost surely, 2^30122773 is an apocalyptic number.

It is an amenable number.

30122773 is a deficient number, since it is larger than the sum of its proper divisors (814167).

30122773 is an equidigital number, since it uses as much as digits as its factorization.

30122773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814166.

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 30122773 is about 5488.4217221347. The cubic root of 30122773 is about 311.1465450807.

Adding to 30122773 its reverse (37722103), we get a palindrome (67844876).

The spelling of 30122773 in words is "thirty million, one hundred twenty-two thousand, seven hundred seventy-three".