30122685 has 20 divisors (see below), whose sum is σ = 53998428. Its totient is φ = 16065216.

The previous prime is 30122683. The next prime is 30122689. The reversal of 30122685 is 58622103.

It can be written as a sum of positive squares in 2 ways, for example, as 4173849 + 25948836 = 2043^2 + 5094^2 .

It is not a de Polignac number, because 30122685 - 2¹ = 30122683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30122681) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36784 + ... + 37593.

Almost surely, 2^30122685 is an apocalyptic number.

It is an amenable number.

30122685 is a deficient number, since it is larger than the sum of its proper divisors (23875743).

30122685 is an equidigital number, since it uses as much as digits as its factorization.

30122685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74394 (or 74385 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30122685 is about 5488.4137052522. The cubic root of 30122685 is about 311.1462420882.

Adding to 30122685 its reverse (58622103), we get a palindrome (88744788).

The spelling of 30122685 in words is "thirty million, one hundred twenty-two thousand, six hundred eighty-five".