30122892 has 18 divisors (see below), whose sum is σ = 76144068. Its totient is φ = 10040952.

The previous prime is 30122887. The next prime is 30122899. The reversal of 30122892 is 29822103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (30122899) 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 5 ways as a sum of consecutive naturals, for example, 418338 + ... + 418409.

It is an arithmetic number, because the mean of its divisors is an integer number (4230226).

Almost surely, 2^30122892 is an apocalyptic number.

It is an amenable number.

30122892 is an abundant number, since it is smaller than the sum of its proper divisors (46021176).

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

30122892 is a wasteful number, since it uses less digits than its factorization.

30122892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836757 (or 836752 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30122892 is about 5488.4325631277. The cubic root of 30122892 is about 311.1469548082.

Adding to 30122892 its reverse (29822103), we get a palindrome (59944995).

The spelling of 30122892 in words is "thirty million, one hundred twenty-two thousand, eight hundred ninety-two".