30122010 has 64 divisors (see below), whose sum is σ = 83116800. Its totient is φ = 7753536.

The previous prime is 30121999. The next prime is 30122017. The reversal of 30122010 is 1022103.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 30121983 and 30122001.

It is not an unprimeable number, because it can be changed into a prime (30122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5907 + ... + 9753.

It is an arithmetic number, because the mean of its divisors is an integer number (1298700).

Almost surely, 2^30122010 is an apocalyptic number.

30122010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30122010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41558400).

30122010 is an abundant number, since it is smaller than the sum of its proper divisors (52994790).

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

30122010 is a wasteful number, since it uses less digits than its factorization.

30122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 30122010 is about 5488.3522117299. The cubic root of 30122010 is about 311.1439179784.

Adding to 30122010 its reverse (1022103), we get a palindrome (31144113).

The spelling of 30122010 in words is "thirty million, one hundred twenty-two thousand, ten".