30122073 has 12 divisors (see below), whose sum is σ = 44331300. Its totient is φ = 19702176.

The previous prime is 30122051. The next prime is 30122083. The reversal of 30122073 is 37022103.

It can be written as a sum of positive squares in 2 ways, for example, as 14653584 + 15468489 = 3828^2 + 3933^2 .

It is not a de Polignac number, because 30122073 - 2¹² = 30117977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30122023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31098 + ... + 32051.

It is an arithmetic number, because the mean of its divisors is an integer number (3694275).

Almost surely, 2^30122073 is an apocalyptic number.

It is an amenable number.

30122073 is a deficient number, since it is larger than the sum of its proper divisors (14209227).

30122073 is a wasteful number, since it uses less digits than its factorization.

30122073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63208 (or 63205 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30122073 is about 5488.3579511544. The cubic root of 30122073 is about 311.1441348968.

Adding to 30122073 its reverse (37022103), we get a palindrome (67144176).

The spelling of 30122073 in words is "thirty million, one hundred twenty-two thousand, seventy-three".